/*
 * This copyright notice applies to this header file only:
 *
 * Copyright (c) 2010-2022 NVIDIA Corporation
 *
 * Permission is hereby granted, free of charge, to any person
 * obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without
 * restriction, including without limitation the rights to use,
 * copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the software, and to permit persons to whom the
 * software is furnished to do so, subject to the following
 * conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 */

/**
 * \file nvEncodeAPI.h
 *   NVIDIA GPUs - beginning with the Kepler generation - contain a hardware-based encoder
 *   (referred to as NVENC) which provides fully-accelerated hardware-based video encoding.
 *   NvEncodeAPI provides the interface for NVIDIA video encoder (NVENC).
 * \date 2011-2022
 *  This file contains the interface constants, structure definitions and function prototypes.
 */

#ifndef _NV_ENCODEAPI_H_
#define _NV_ENCODEAPI_H_

#include <stdlib.h>

#ifdef _WIN32
#include <windows.h>
#endif

#ifdef _MSC_VER
#ifndef _STDINT
typedef __int32 int32_t;
typedef unsigned __int32 uint32_t;
typedef __int64 int64_t;
typedef unsigned __int64 uint64_t;
typedef signed char int8_t;
typedef unsigned char uint8_t;
typedef short int16_t;
typedef unsigned short uint16_t;
#endif
#else
#include <stdint.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif

/**
 * \addtogroup ENCODER_STRUCTURE NvEncodeAPI Data structures
 * @{
 */

#ifdef _WIN32
#define NVENCAPI __stdcall
typedef RECT NVENC_RECT;
#else
#define NVENCAPI
// =========================================================================================
#ifndef GUID_DEFINED
#define GUID_DEFINED
/*!
 * \struct GUID
 * Abstracts the GUID structure for non-windows platforms.
 */
// =========================================================================================
typedef struct _GUID {
    uint32_t Data1; /**< [in]: Specifies the first 8 hexadecimal digits of the GUID. */
    uint16_t Data2; /**< [in]: Specifies the first group of 4 hexadecimal digits. */
    uint16_t Data3; /**< [in]: Specifies the second group of 4 hexadecimal digits. */
    uint8_t Data4[8]; /**< [in]: Array of 8 bytes. The first 2 bytes contain the third group of 4
                         hexadecimal digits. The remaining 6 bytes contain the final 12 hexadecimal
                         digits.                       */
} GUID, *LPGUID;
#endif // GUID

/**
 * \struct _NVENC_RECT
 * Defines a Rectangle. Used in ::NV_ENC_PREPROCESS_FRAME.
 */
typedef struct _NVENC_RECT {
    uint32_t left; /**< [in]: X coordinate of the upper left corner of rectangular area to be
                      specified.       */
    uint32_t top; /**< [in]: Y coordinate of the upper left corner of the rectangular area to be
                     specified.   */
    uint32_t right; /**< [in]: X coordinate of the bottom right corner of the rectangular area to be
                       specified. */
    uint32_t bottom; /**< [in]: Y coordinate of the bottom right corner of the rectangular area to
                        be specified. */
} NVENC_RECT;

#endif // _WIN32

/** @} */ /* End of GUID and NVENC_RECT structure grouping*/

typedef void* NV_ENC_INPUT_PTR; /**< NVENCODE API input buffer                              */
typedef void* NV_ENC_OUTPUT_PTR; /**< NVENCODE API output buffer*/
typedef void* NV_ENC_REGISTERED_PTR; /**< A Resource that has been registered with NVENCODE API*/
typedef void* NV_ENC_CUSTREAM_PTR; /**< Pointer to CUstream*/

#define NVENCAPI_MAJOR_VERSION 12
#define NVENCAPI_MINOR_VERSION 0

#define NVENCAPI_VERSION (NVENCAPI_MAJOR_VERSION | (NVENCAPI_MINOR_VERSION << 24))

/**
 * Macro to generate per-structure version for use with API.
 */
#define NVENCAPI_STRUCT_VERSION(ver) ((uint32_t)NVENCAPI_VERSION | ((ver) << 16) | (0x7 << 28))

#define NVENC_INFINITE_GOPLENGTH 0xffffffff

#define NV_MAX_SEQ_HDR_LEN (512)

#ifdef __GNUC__
#define NV_ENC_DEPRECATED                                                                          \
    __attribute__((deprecated("WILL BE REMOVED IN A FUTURE VIDEO CODEC SDK VERSION")))
#elif defined(_MSC_VER)
#define NV_ENC_DEPRECATED                                                                          \
    __declspec(deprecated("WILL BE REMOVED IN A FUTURE VIDEO CODEC SDK VERSION"))
#endif

// =========================================================================================
// Encode Codec GUIDS supported by the NvEncodeAPI interface.
// =========================================================================================

// {6BC82762-4E63-4ca4-AA85-1E50F321F6BF}
static const GUID NV_ENC_CODEC_H264_GUID
    = { 0x6bc82762, 0x4e63, 0x4ca4, { 0xaa, 0x85, 0x1e, 0x50, 0xf3, 0x21, 0xf6, 0xbf } };

// {790CDC88-4522-4d7b-9425-BDA9975F7603}
static const GUID NV_ENC_CODEC_HEVC_GUID
    = { 0x790cdc88, 0x4522, 0x4d7b, { 0x94, 0x25, 0xbd, 0xa9, 0x97, 0x5f, 0x76, 0x3 } };

// {0A352289-0AA7-4759-862D-5D15CD16D254}
static const GUID NV_ENC_CODEC_AV1_GUID
    = { 0x0a352289, 0x0aa7, 0x4759, { 0x86, 0x2d, 0x5d, 0x15, 0xcd, 0x16, 0xd2, 0x54 } };

// =========================================================================================
// *   Encode Profile GUIDS supported by the NvEncodeAPI interface.
// =========================================================================================

// {BFD6F8E7-233C-4341-8B3E-4818523803F4}
static const GUID NV_ENC_CODEC_PROFILE_AUTOSELECT_GUID
    = { 0xbfd6f8e7, 0x233c, 0x4341, { 0x8b, 0x3e, 0x48, 0x18, 0x52, 0x38, 0x3, 0xf4 } };

// {0727BCAA-78C4-4c83-8C2F-EF3DFF267C6A}
static const GUID NV_ENC_H264_PROFILE_BASELINE_GUID
    = { 0x727bcaa, 0x78c4, 0x4c83, { 0x8c, 0x2f, 0xef, 0x3d, 0xff, 0x26, 0x7c, 0x6a } };

// {60B5C1D4-67FE-4790-94D5-C4726D7B6E6D}
static const GUID NV_ENC_H264_PROFILE_MAIN_GUID
    = { 0x60b5c1d4, 0x67fe, 0x4790, { 0x94, 0xd5, 0xc4, 0x72, 0x6d, 0x7b, 0x6e, 0x6d } };

// {E7CBC309-4F7A-4b89-AF2A-D537C92BE310}
static const GUID NV_ENC_H264_PROFILE_HIGH_GUID
    = { 0xe7cbc309, 0x4f7a, 0x4b89, { 0xaf, 0x2a, 0xd5, 0x37, 0xc9, 0x2b, 0xe3, 0x10 } };

// {7AC663CB-A598-4960-B844-339B261A7D52}
static const GUID NV_ENC_H264_PROFILE_HIGH_444_GUID
    = { 0x7ac663cb, 0xa598, 0x4960, { 0xb8, 0x44, 0x33, 0x9b, 0x26, 0x1a, 0x7d, 0x52 } };

// {40847BF5-33F7-4601-9084-E8FE3C1DB8B7}
static const GUID NV_ENC_H264_PROFILE_STEREO_GUID
    = { 0x40847bf5, 0x33f7, 0x4601, { 0x90, 0x84, 0xe8, 0xfe, 0x3c, 0x1d, 0xb8, 0xb7 } };

// {B405AFAC-F32B-417B-89C4-9ABEED3E5978}
static const GUID NV_ENC_H264_PROFILE_PROGRESSIVE_HIGH_GUID
    = { 0xb405afac, 0xf32b, 0x417b, { 0x89, 0xc4, 0x9a, 0xbe, 0xed, 0x3e, 0x59, 0x78 } };

// {AEC1BD87-E85B-48f2-84C3-98BCA6285072}
static const GUID NV_ENC_H264_PROFILE_CONSTRAINED_HIGH_GUID
    = { 0xaec1bd87, 0xe85b, 0x48f2, { 0x84, 0xc3, 0x98, 0xbc, 0xa6, 0x28, 0x50, 0x72 } };

// {B514C39A-B55B-40fa-878F-F1253B4DFDEC}
static const GUID NV_ENC_HEVC_PROFILE_MAIN_GUID
    = { 0xb514c39a, 0xb55b, 0x40fa, { 0x87, 0x8f, 0xf1, 0x25, 0x3b, 0x4d, 0xfd, 0xec } };

// {fa4d2b6c-3a5b-411a-8018-0a3f5e3c9be5}
static const GUID NV_ENC_HEVC_PROFILE_MAIN10_GUID
    = { 0xfa4d2b6c, 0x3a5b, 0x411a, { 0x80, 0x18, 0x0a, 0x3f, 0x5e, 0x3c, 0x9b, 0xe5 } };

// For HEVC Main 444 8 bit and HEVC Main 444 10 bit profiles only
// {51ec32b5-1b4c-453c-9cbd-b616bd621341}
static const GUID NV_ENC_HEVC_PROFILE_FREXT_GUID
    = { 0x51ec32b5, 0x1b4c, 0x453c, { 0x9c, 0xbd, 0xb6, 0x16, 0xbd, 0x62, 0x13, 0x41 } };

// {5f2a39f5-f14e-4f95-9a9e-b76d568fcf97}
static const GUID NV_ENC_AV1_PROFILE_MAIN_GUID
    = { 0x5f2a39f5, 0xf14e, 0x4f95, { 0x9a, 0x9e, 0xb7, 0x6d, 0x56, 0x8f, 0xcf, 0x97 } };

// =========================================================================================
// *   Preset GUIDS supported by the NvEncodeAPI interface.
// =========================================================================================
// {B2DFB705-4EBD-4C49-9B5F-24A777D3E587}
NV_ENC_DEPRECATED static const GUID NV_ENC_PRESET_DEFAULT_GUID
    = { 0xb2dfb705, 0x4ebd, 0x4c49, { 0x9b, 0x5f, 0x24, 0xa7, 0x77, 0xd3, 0xe5, 0x87 } };

// {60E4C59F-E846-4484-A56D-CD45BE9FDDF6}
NV_ENC_DEPRECATED static const GUID NV_ENC_PRESET_HP_GUID
    = { 0x60e4c59f, 0xe846, 0x4484, { 0xa5, 0x6d, 0xcd, 0x45, 0xbe, 0x9f, 0xdd, 0xf6 } };

// {34DBA71D-A77B-4B8F-9C3E-B6D5DA24C012}
NV_ENC_DEPRECATED static const GUID NV_ENC_PRESET_HQ_GUID
    = { 0x34dba71d, 0xa77b, 0x4b8f, { 0x9c, 0x3e, 0xb6, 0xd5, 0xda, 0x24, 0xc0, 0x12 } };

// {82E3E450-BDBB-4e40-989C-82A90DF9EF32}
NV_ENC_DEPRECATED static const GUID NV_ENC_PRESET_BD_GUID
    = { 0x82e3e450, 0xbdbb, 0x4e40, { 0x98, 0x9c, 0x82, 0xa9, 0xd, 0xf9, 0xef, 0x32 } };

// {49DF21C5-6DFA-4feb-9787-6ACC9EFFB726}
NV_ENC_DEPRECATED static const GUID NV_ENC_PRESET_LOW_LATENCY_DEFAULT_GUID
    = { 0x49df21c5, 0x6dfa, 0x4feb, { 0x97, 0x87, 0x6a, 0xcc, 0x9e, 0xff, 0xb7, 0x26 } };

// {C5F733B9-EA97-4cf9-BEC2-BF78A74FD105}
NV_ENC_DEPRECATED static const GUID NV_ENC_PRESET_LOW_LATENCY_HQ_GUID
    = { 0xc5f733b9, 0xea97, 0x4cf9, { 0xbe, 0xc2, 0xbf, 0x78, 0xa7, 0x4f, 0xd1, 0x5 } };

// {67082A44-4BAD-48FA-98EA-93056D150A58}
NV_ENC_DEPRECATED static const GUID NV_ENC_PRESET_LOW_LATENCY_HP_GUID
    = { 0x67082a44, 0x4bad, 0x48fa, { 0x98, 0xea, 0x93, 0x5, 0x6d, 0x15, 0xa, 0x58 } };

// {D5BFB716-C604-44e7-9BB8-DEA5510FC3AC}
NV_ENC_DEPRECATED static const GUID NV_ENC_PRESET_LOSSLESS_DEFAULT_GUID
    = { 0xd5bfb716, 0xc604, 0x44e7, { 0x9b, 0xb8, 0xde, 0xa5, 0x51, 0xf, 0xc3, 0xac } };

// {149998E7-2364-411d-82EF-179888093409}
NV_ENC_DEPRECATED static const GUID NV_ENC_PRESET_LOSSLESS_HP_GUID
    = { 0x149998e7, 0x2364, 0x411d, { 0x82, 0xef, 0x17, 0x98, 0x88, 0x9, 0x34, 0x9 } };

// Performance degrades and quality improves as we move from P1 to P7. Presets P3 to P7 for H264 and
// Presets P2 to P7 for HEVC have B frames enabled by default for HIGH_QUALITY and LOSSLESS tuning
// info, and will not work with Weighted Prediction enabled. In case Weighted Prediction is
// required, disable B frames by setting frameIntervalP = 1 {FC0A8D3E-45F8-4CF8-80C7-298871590EBF}
static const GUID NV_ENC_PRESET_P1_GUID
    = { 0xfc0a8d3e, 0x45f8, 0x4cf8, { 0x80, 0xc7, 0x29, 0x88, 0x71, 0x59, 0xe, 0xbf } };

// {F581CFB8-88D6-4381-93F0-DF13F9C27DAB}
static const GUID NV_ENC_PRESET_P2_GUID
    = { 0xf581cfb8, 0x88d6, 0x4381, { 0x93, 0xf0, 0xdf, 0x13, 0xf9, 0xc2, 0x7d, 0xab } };

// {36850110-3A07-441F-94D5-3670631F91F6}
static const GUID NV_ENC_PRESET_P3_GUID
    = { 0x36850110, 0x3a07, 0x441f, { 0x94, 0xd5, 0x36, 0x70, 0x63, 0x1f, 0x91, 0xf6 } };

// {90A7B826-DF06-4862-B9D2-CD6D73A08681}
static const GUID NV_ENC_PRESET_P4_GUID
    = { 0x90a7b826, 0xdf06, 0x4862, { 0xb9, 0xd2, 0xcd, 0x6d, 0x73, 0xa0, 0x86, 0x81 } };

// {21C6E6B4-297A-4CBA-998F-B6CBDE72ADE3}
static const GUID NV_ENC_PRESET_P5_GUID
    = { 0x21c6e6b4, 0x297a, 0x4cba, { 0x99, 0x8f, 0xb6, 0xcb, 0xde, 0x72, 0xad, 0xe3 } };

// {8E75C279-6299-4AB6-8302-0B215A335CF5}
static const GUID NV_ENC_PRESET_P6_GUID
    = { 0x8e75c279, 0x6299, 0x4ab6, { 0x83, 0x2, 0xb, 0x21, 0x5a, 0x33, 0x5c, 0xf5 } };

// {84848C12-6F71-4C13-931B-53E283F57974}
static const GUID NV_ENC_PRESET_P7_GUID
    = { 0x84848c12, 0x6f71, 0x4c13, { 0x93, 0x1b, 0x53, 0xe2, 0x83, 0xf5, 0x79, 0x74 } };

/**
 * \addtogroup ENCODER_STRUCTURE NvEncodeAPI Data structures
 * @{
 */

/**
 * Input frame encode modes
 */
typedef enum _NV_ENC_PARAMS_FRAME_FIELD_MODE {
    NV_ENC_PARAMS_FRAME_FIELD_MODE_FRAME = 0x01, /**< Frame mode */
    NV_ENC_PARAMS_FRAME_FIELD_MODE_FIELD = 0x02, /**< Field mode */
    NV_ENC_PARAMS_FRAME_FIELD_MODE_MBAFF = 0x03 /**< MB adaptive frame/field */
} NV_ENC_PARAMS_FRAME_FIELD_MODE;

/**
 * Rate Control Modes
 */
typedef enum _NV_ENC_PARAMS_RC_MODE {
    NV_ENC_PARAMS_RC_CONSTQP = 0x0, /**< Constant QP mode */
    NV_ENC_PARAMS_RC_VBR = 0x1, /**< Variable bitrate mode */
    NV_ENC_PARAMS_RC_CBR = 0x2, /**< Constant bitrate mode */
    NV_ENC_PARAMS_RC_CBR_LOWDELAY_HQ
    = 0x8, /**< Deprecated, use NV_ENC_PARAMS_RC_CBR + NV_ENC_TWO_PASS_QUARTER_RESOLUTION /
              NV_ENC_TWO_PASS_FULL_RESOLUTION + lowDelayKeyFrameScale=1 */
    NV_ENC_PARAMS_RC_CBR_HQ
    = 0x10, /**< Deprecated, use NV_ENC_PARAMS_RC_CBR + NV_ENC_TWO_PASS_QUARTER_RESOLUTION /
               NV_ENC_TWO_PASS_FULL_RESOLUTION */
    NV_ENC_PARAMS_RC_VBR_HQ
    = 0x20 /**< Deprecated, use NV_ENC_PARAMS_RC_VBR + NV_ENC_TWO_PASS_QUARTER_RESOLUTION /
              NV_ENC_TWO_PASS_FULL_RESOLUTION */
} NV_ENC_PARAMS_RC_MODE;

/**
 * Multi Pass encoding
 */
typedef enum _NV_ENC_MULTI_PASS {
    NV_ENC_MULTI_PASS_DISABLED = 0x0, /**< Single Pass */
    NV_ENC_TWO_PASS_QUARTER_RESOLUTION
    = 0x1, /**< Two Pass encoding is enabled where first Pass is quarter resolution */
    NV_ENC_TWO_PASS_FULL_RESOLUTION
    = 0x2, /**< Two Pass encoding is enabled where first Pass is full resolution */
} NV_ENC_MULTI_PASS;

/**
 * Emphasis Levels
 */
typedef enum _NV_ENC_EMPHASIS_MAP_LEVEL {
    NV_ENC_EMPHASIS_MAP_LEVEL_0 = 0x0, /**< Emphasis Map Level 0, for zero Delta QP value */
    NV_ENC_EMPHASIS_MAP_LEVEL_1 = 0x1, /**< Emphasis Map Level 1, for very low Delta QP value */
    NV_ENC_EMPHASIS_MAP_LEVEL_2 = 0x2, /**< Emphasis Map Level 2, for low Delta QP value */
    NV_ENC_EMPHASIS_MAP_LEVEL_3 = 0x3, /**< Emphasis Map Level 3, for medium Delta QP value */
    NV_ENC_EMPHASIS_MAP_LEVEL_4 = 0x4, /**< Emphasis Map Level 4, for high Delta QP value */
    NV_ENC_EMPHASIS_MAP_LEVEL_5 = 0x5 /**< Emphasis Map Level 5, for very high Delta QP value */
} NV_ENC_EMPHASIS_MAP_LEVEL;

/**
 * QP MAP MODE
 */
typedef enum _NV_ENC_QP_MAP_MODE {
    NV_ENC_QP_MAP_DISABLED = 0x0, /**< Value in NV_ENC_PIC_PARAMS::qpDeltaMap have no effect. */
    NV_ENC_QP_MAP_EMPHASIS = 0x1, /**< Value in NV_ENC_PIC_PARAMS::qpDeltaMap will be treated as
                                     Emphasis level. Currently this is only supported for H264 */
    NV_ENC_QP_MAP_DELTA
    = 0x2, /**< Value in NV_ENC_PIC_PARAMS::qpDeltaMap will be treated as QP delta map. */
    NV_ENC_QP_MAP = 0x3, /**< Currently This is not supported. Value in
                            NV_ENC_PIC_PARAMS::qpDeltaMap will be treated as QP value.   */
} NV_ENC_QP_MAP_MODE;

#define NV_ENC_PARAMS_RC_VBR_MINQP (NV_ENC_PARAMS_RC_MODE)0x4 /**< Deprecated */
#define NV_ENC_PARAMS_RC_2_PASS_QUALITY NV_ENC_PARAMS_RC_CBR_LOWDELAY_HQ /**< Deprecated */
#define NV_ENC_PARAMS_RC_2_PASS_FRAMESIZE_CAP NV_ENC_PARAMS_RC_CBR_HQ /**< Deprecated */
#define NV_ENC_PARAMS_RC_2_PASS_VBR NV_ENC_PARAMS_RC_VBR_HQ /**< Deprecated */
#define NV_ENC_PARAMS_RC_CBR2 NV_ENC_PARAMS_RC_CBR /**< Deprecated */

/**
 * Input picture structure
 */
typedef enum _NV_ENC_PIC_STRUCT {
    NV_ENC_PIC_STRUCT_FRAME = 0x01, /**< Progressive frame */
    NV_ENC_PIC_STRUCT_FIELD_TOP_BOTTOM = 0x02, /**< Field encoding top field first */
    NV_ENC_PIC_STRUCT_FIELD_BOTTOM_TOP = 0x03 /**< Field encoding bottom field first */
} NV_ENC_PIC_STRUCT;

/**
 * Display picture structure
 * Currently, this enum is only used for deciding the number of clock timestamp sets in Picture
 * Timing SEI / Time Code SEI Otherwise, this has no impact on encoder behavior
 */
typedef enum _NV_ENC_DISPLAY_PIC_STRUCT {
    NV_ENC_PIC_STRUCT_DISPLAY_FRAME = 0x00, /**< Field encoding top field first */
    NV_ENC_PIC_STRUCT_DISPLAY_FIELD_TOP_BOTTOM = 0x01, /**< Field encoding top field first */
    NV_ENC_PIC_STRUCT_DISPLAY_FIELD_BOTTOM_TOP = 0x02, /**< Field encoding bottom field first */
    NV_ENC_PIC_STRUCT_DISPLAY_FRAME_DOUBLING = 0x03, /**< Frame doubling */
    NV_ENC_PIC_STRUCT_DISPLAY_FRAME_TRIPLING = 0x04 /**< Field tripling */
} NV_ENC_DISPLAY_PIC_STRUCT;

/**
 * Input picture type
 */
typedef enum _NV_ENC_PIC_TYPE {
    NV_ENC_PIC_TYPE_P = 0x0, /**< Forward predicted */
    NV_ENC_PIC_TYPE_B = 0x01, /**< Bi-directionally predicted picture */
    NV_ENC_PIC_TYPE_I = 0x02, /**< Intra predicted picture */
    NV_ENC_PIC_TYPE_IDR = 0x03, /**< IDR picture */
    NV_ENC_PIC_TYPE_BI = 0x04, /**< Bi-directionally predicted with only Intra MBs */
    NV_ENC_PIC_TYPE_SKIPPED = 0x05, /**< Picture is skipped */
    NV_ENC_PIC_TYPE_INTRA_REFRESH = 0x06, /**< First picture in intra refresh cycle */
    NV_ENC_PIC_TYPE_NONREF_P = 0x07, /**< Non reference P picture */
    NV_ENC_PIC_TYPE_UNKNOWN = 0xFF /**< Picture type unknown */
} NV_ENC_PIC_TYPE;

/**
 * Motion vector precisions
 */
typedef enum _NV_ENC_MV_PRECISION {
    NV_ENC_MV_PRECISION_DEFAULT
    = 0x0, /**< Driver selects Quarter-Pel motion vector precision by default */
    NV_ENC_MV_PRECISION_FULL_PEL = 0x01, /**< Full-Pel motion vector precision */
    NV_ENC_MV_PRECISION_HALF_PEL = 0x02, /**< Half-Pel motion vector precision */
    NV_ENC_MV_PRECISION_QUARTER_PEL = 0x03 /**< Quarter-Pel motion vector precision */
} NV_ENC_MV_PRECISION;

/**
 * Input buffer formats
 */
typedef enum _NV_ENC_BUFFER_FORMAT {
    NV_ENC_BUFFER_FORMAT_UNDEFINED = 0x00000000, /**< Undefined buffer format */

    NV_ENC_BUFFER_FORMAT_NV12
    = 0x00000001, /**< Semi-Planar YUV [Y plane followed by interleaved UV plane] */
    NV_ENC_BUFFER_FORMAT_YV12 = 0x00000010, /**< Planar YUV [Y plane followed by V and U planes] */
    NV_ENC_BUFFER_FORMAT_IYUV = 0x00000100, /**< Planar YUV [Y plane followed by U and V planes] */
    NV_ENC_BUFFER_FORMAT_YUV444
    = 0x00001000, /**< Planar YUV [Y plane followed by U and V planes] */
    NV_ENC_BUFFER_FORMAT_YUV420_10BIT
    = 0x00010000, /**< 10 bit Semi-Planar YUV [Y plane followed by interleaved UV plane]. Each pixel
                     of size 2 bytes. Most Significant 10 bits contain pixel data. */
    NV_ENC_BUFFER_FORMAT_YUV444_10BIT
    = 0x00100000, /**< 10 bit Planar YUV444 [Y plane followed by U and V planes]. Each pixel of size
                     2 bytes. Most Significant 10 bits contain pixel data.  */
    NV_ENC_BUFFER_FORMAT_ARGB
    = 0x01000000, /**< 8 bit Packed A8R8G8B8. This is a word-ordered format
                       where a pixel is represented by a 32-bit word with B
                       in the lowest 8 bits, G in the next 8 bits, R in the
                       8 bits after that and A in the highest 8 bits. */
    NV_ENC_BUFFER_FORMAT_ARGB10
    = 0x02000000, /**< 10 bit Packed A2R10G10B10. This is a word-ordered format
                       where a pixel is represented by a 32-bit word with B
                       in the lowest 10 bits, G in the next 10 bits, R in the
                       10 bits after that and A in the highest 2 bits. */
    NV_ENC_BUFFER_FORMAT_AYUV
    = 0x04000000, /**< 8 bit Packed A8Y8U8V8. This is a word-ordered format
                       where a pixel is represented by a 32-bit word with V
                       in the lowest 8 bits, U in the next 8 bits, Y in the
                       8 bits after that and A in the highest 8 bits. */
    NV_ENC_BUFFER_FORMAT_ABGR
    = 0x10000000, /**< 8 bit Packed A8B8G8R8. This is a word-ordered format
                       where a pixel is represented by a 32-bit word with R
                       in the lowest 8 bits, G in the next 8 bits, B in the
                       8 bits after that and A in the highest 8 bits. */
    NV_ENC_BUFFER_FORMAT_ABGR10
    = 0x20000000, /**< 10 bit Packed A2B10G10R10. This is a word-ordered format
                       where a pixel is represented by a 32-bit word with R
                       in the lowest 10 bits, G in the next 10 bits, B in the
                       10 bits after that and A in the highest 2 bits. */
    NV_ENC_BUFFER_FORMAT_U8
    = 0x40000000, /**< Buffer format representing one-dimensional buffer.
                       This format should be used only when registering the
                       resource as output buffer, which will be used to write
                       the encoded bit stream or H.264 ME only mode output. */
} NV_ENC_BUFFER_FORMAT;

#define NV_ENC_BUFFER_FORMAT_NV12_PL NV_ENC_BUFFER_FORMAT_NV12
#define NV_ENC_BUFFER_FORMAT_YV12_PL NV_ENC_BUFFER_FORMAT_YV12
#define NV_ENC_BUFFER_FORMAT_IYUV_PL NV_ENC_BUFFER_FORMAT_IYUV
#define NV_ENC_BUFFER_FORMAT_YUV444_PL NV_ENC_BUFFER_FORMAT_YUV444

/**
 * Encoding levels
 */
typedef enum _NV_ENC_LEVEL {
    NV_ENC_LEVEL_AUTOSELECT = 0,

    NV_ENC_LEVEL_H264_1 = 10,
    NV_ENC_LEVEL_H264_1b = 9,
    NV_ENC_LEVEL_H264_11 = 11,
    NV_ENC_LEVEL_H264_12 = 12,
    NV_ENC_LEVEL_H264_13 = 13,
    NV_ENC_LEVEL_H264_2 = 20,
    NV_ENC_LEVEL_H264_21 = 21,
    NV_ENC_LEVEL_H264_22 = 22,
    NV_ENC_LEVEL_H264_3 = 30,
    NV_ENC_LEVEL_H264_31 = 31,
    NV_ENC_LEVEL_H264_32 = 32,
    NV_ENC_LEVEL_H264_4 = 40,
    NV_ENC_LEVEL_H264_41 = 41,
    NV_ENC_LEVEL_H264_42 = 42,
    NV_ENC_LEVEL_H264_5 = 50,
    NV_ENC_LEVEL_H264_51 = 51,
    NV_ENC_LEVEL_H264_52 = 52,
    NV_ENC_LEVEL_H264_60 = 60,
    NV_ENC_LEVEL_H264_61 = 61,
    NV_ENC_LEVEL_H264_62 = 62,

    NV_ENC_LEVEL_HEVC_1 = 30,
    NV_ENC_LEVEL_HEVC_2 = 60,
    NV_ENC_LEVEL_HEVC_21 = 63,
    NV_ENC_LEVEL_HEVC_3 = 90,
    NV_ENC_LEVEL_HEVC_31 = 93,
    NV_ENC_LEVEL_HEVC_4 = 120,
    NV_ENC_LEVEL_HEVC_41 = 123,
    NV_ENC_LEVEL_HEVC_5 = 150,
    NV_ENC_LEVEL_HEVC_51 = 153,
    NV_ENC_LEVEL_HEVC_52 = 156,
    NV_ENC_LEVEL_HEVC_6 = 180,
    NV_ENC_LEVEL_HEVC_61 = 183,
    NV_ENC_LEVEL_HEVC_62 = 186,

    NV_ENC_TIER_HEVC_MAIN = 0,
    NV_ENC_TIER_HEVC_HIGH = 1,

    NV_ENC_LEVEL_AV1_2 = 0,
    NV_ENC_LEVEL_AV1_21 = 1,
    NV_ENC_LEVEL_AV1_22 = 2,
    NV_ENC_LEVEL_AV1_23 = 3,
    NV_ENC_LEVEL_AV1_3 = 4,
    NV_ENC_LEVEL_AV1_31 = 5,
    NV_ENC_LEVEL_AV1_32 = 6,
    NV_ENC_LEVEL_AV1_33 = 7,
    NV_ENC_LEVEL_AV1_4 = 8,
    NV_ENC_LEVEL_AV1_41 = 9,
    NV_ENC_LEVEL_AV1_42 = 10,
    NV_ENC_LEVEL_AV1_43 = 11,
    NV_ENC_LEVEL_AV1_5 = 12,
    NV_ENC_LEVEL_AV1_51 = 13,
    NV_ENC_LEVEL_AV1_52 = 14,
    NV_ENC_LEVEL_AV1_53 = 15,
    NV_ENC_LEVEL_AV1_6 = 16,
    NV_ENC_LEVEL_AV1_61 = 17,
    NV_ENC_LEVEL_AV1_62 = 18,
    NV_ENC_LEVEL_AV1_63 = 19,
    NV_ENC_LEVEL_AV1_7 = 20,
    NV_ENC_LEVEL_AV1_71 = 21,
    NV_ENC_LEVEL_AV1_72 = 22,
    NV_ENC_LEVEL_AV1_73 = 23,
    NV_ENC_LEVEL_AV1_AUTOSELECT,

    NV_ENC_TIER_AV1_0 = 0,
    NV_ENC_TIER_AV1_1 = 1
} NV_ENC_LEVEL;

/**
 * Error Codes
 */
typedef enum _NVENCSTATUS {
    /**
     * This indicates that API call returned with no errors.
     */
    NV_ENC_SUCCESS,

    /**
     * This indicates that no encode capable devices were detected.
     */
    NV_ENC_ERR_NO_ENCODE_DEVICE,

    /**
     * This indicates that devices pass by the client is not supported.
     */
    NV_ENC_ERR_UNSUPPORTED_DEVICE,

    /**
     * This indicates that the encoder device supplied by the client is not
     * valid.
     */
    NV_ENC_ERR_INVALID_ENCODERDEVICE,

    /**
     * This indicates that device passed to the API call is invalid.
     */
    NV_ENC_ERR_INVALID_DEVICE,

    /**
     * This indicates that device passed to the API call is no longer available and
     * needs to be reinitialized. The clients need to destroy the current encoder
     * session by freeing the allocated input output buffers and destroying the device
     * and create a new encoding session.
     */
    NV_ENC_ERR_DEVICE_NOT_EXIST,

    /**
     * This indicates that one or more of the pointers passed to the API call
     * is invalid.
     */
    NV_ENC_ERR_INVALID_PTR,

    /**
     * This indicates that completion event passed in ::NvEncEncodePicture() call
     * is invalid.
     */
    NV_ENC_ERR_INVALID_EVENT,

    /**
     * This indicates that one or more of the parameter passed to the API call
     * is invalid.
     */
    NV_ENC_ERR_INVALID_PARAM,

    /**
     * This indicates that an API call was made in wrong sequence/order.
     */
    NV_ENC_ERR_INVALID_CALL,

    /**
     * This indicates that the API call failed because it was unable to allocate
     * enough memory to perform the requested operation.
     */
    NV_ENC_ERR_OUT_OF_MEMORY,

    /**
     * This indicates that the encoder has not been initialized with
     * ::NvEncInitializeEncoder() or that initialization has failed.
     * The client cannot allocate input or output buffers or do any encoding
     * related operation before successfully initializing the encoder.
     */
    NV_ENC_ERR_ENCODER_NOT_INITIALIZED,

    /**
     * This indicates that an unsupported parameter was passed by the client.
     */
    NV_ENC_ERR_UNSUPPORTED_PARAM,

    /**
     * This indicates that the ::NvEncLockBitstream() failed to lock the output
     * buffer. This happens when the client makes a non blocking lock call to
     * access the output bitstream by passing NV_ENC_LOCK_BITSTREAM::doNotWait flag.
     * This is not a fatal error and client should retry the same operation after
     * few milliseconds.
     */
    NV_ENC_ERR_LOCK_BUSY,

    /**
     * This indicates that the size of the user buffer passed by the client is
     * insufficient for the requested operation.
     */
    NV_ENC_ERR_NOT_ENOUGH_BUFFER,

    /**
     * This indicates that an invalid struct version was used by the client.
     */
    NV_ENC_ERR_INVALID_VERSION,

    /**
     * This indicates that ::NvEncMapInputResource() API failed to map the client
     * provided input resource.
     */
    NV_ENC_ERR_MAP_FAILED,

    /**
     * This indicates encode driver requires more input buffers to produce an output
     * bitstream. If this error is returned from ::NvEncEncodePicture() API, this
     * is not a fatal error. If the client is encoding with B frames then,
     * ::NvEncEncodePicture() API might be buffering the input frame for re-ordering.
     *
     * A client operating in synchronous mode cannot call ::NvEncLockBitstream()
     * API on the output bitstream buffer if ::NvEncEncodePicture() returned the
     * ::NV_ENC_ERR_NEED_MORE_INPUT error code.
     * The client must continue providing input frames until encode driver returns
     * ::NV_ENC_SUCCESS. After receiving ::NV_ENC_SUCCESS status the client can call
     * ::NvEncLockBitstream() API on the output buffers in the same order in which
     * it has called ::NvEncEncodePicture().
     */
    NV_ENC_ERR_NEED_MORE_INPUT,

    /**
     * This indicates that the HW encoder is busy encoding and is unable to encode
     * the input. The client should call ::NvEncEncodePicture() again after few
     * milliseconds.
     */
    NV_ENC_ERR_ENCODER_BUSY,

    /**
     * This indicates that the completion event passed in ::NvEncEncodePicture()
     * API has not been registered with encoder driver using ::NvEncRegisterAsyncEvent().
     */
    NV_ENC_ERR_EVENT_NOT_REGISTERD,

    /**
     * This indicates that an unknown internal error has occurred.
     */
    NV_ENC_ERR_GENERIC,

    /**
     * This indicates that the client is attempting to use a feature
     * that is not available for the license type for the current system.
     */
    NV_ENC_ERR_INCOMPATIBLE_CLIENT_KEY,

    /**
     * This indicates that the client is attempting to use a feature
     * that is not implemented for the current version.
     */
    NV_ENC_ERR_UNIMPLEMENTED,

    /**
     * This indicates that the ::NvEncRegisterResource API failed to register the resource.
     */
    NV_ENC_ERR_RESOURCE_REGISTER_FAILED,

    /**
     * This indicates that the client is attempting to unregister a resource
     * that has not been successfully registered.
     */
    NV_ENC_ERR_RESOURCE_NOT_REGISTERED,

    /**
     * This indicates that the client is attempting to unmap a resource
     * that has not been successfully mapped.
     */
    NV_ENC_ERR_RESOURCE_NOT_MAPPED,

} NVENCSTATUS;

/**
 * Encode Picture encode flags.
 */
typedef enum _NV_ENC_PIC_FLAGS {
    NV_ENC_PIC_FLAG_FORCEINTRA = 0x1, /**< Encode the current picture as an Intra picture */
    NV_ENC_PIC_FLAG_FORCEIDR
    = 0x2, /**< Encode the current picture as an IDR picture.
                This flag is only valid when Picture type decision is taken by the Encoder
                [_NV_ENC_INITIALIZE_PARAMS::enablePTD == 1]. */
    NV_ENC_PIC_FLAG_OUTPUT_SPSPPS
    = 0x4, /**< Write the sequence and picture header in encoded bitstream of the current picture */
    NV_ENC_PIC_FLAG_EOS = 0x8, /**< Indicates end of the input stream */
} NV_ENC_PIC_FLAGS;

/**
 * Memory heap to allocate input and output buffers.
 */
typedef enum _NV_ENC_MEMORY_HEAP {
    NV_ENC_MEMORY_HEAP_AUTOSELECT
    = 0, /**< Memory heap to be decided by the encoder driver based on the usage */
    NV_ENC_MEMORY_HEAP_VID = 1, /**< Memory heap is in local video memory */
    NV_ENC_MEMORY_HEAP_SYSMEM_CACHED = 2, /**< Memory heap is in cached system memory */
    NV_ENC_MEMORY_HEAP_SYSMEM_UNCACHED = 3 /**< Memory heap is in uncached system memory */
} NV_ENC_MEMORY_HEAP;

/**
 * B-frame used as reference modes
 */
typedef enum _NV_ENC_BFRAME_REF_MODE {
    NV_ENC_BFRAME_REF_MODE_DISABLED = 0x0, /**< B frame is not used for reference */
    NV_ENC_BFRAME_REF_MODE_EACH = 0x1, /**< Each B-frame will be used for reference */
    NV_ENC_BFRAME_REF_MODE_MIDDLE
    = 0x2, /**< Only(Number of B-frame)/2 th B-frame will be used for reference */
} NV_ENC_BFRAME_REF_MODE;

/**
 * H.264 entropy coding modes.
 */
typedef enum _NV_ENC_H264_ENTROPY_CODING_MODE {
    NV_ENC_H264_ENTROPY_CODING_MODE_AUTOSELECT
    = 0x0, /**< Entropy coding mode is auto selected by the encoder driver */
    NV_ENC_H264_ENTROPY_CODING_MODE_CABAC = 0x1, /**< Entropy coding mode is CABAC */
    NV_ENC_H264_ENTROPY_CODING_MODE_CAVLC = 0x2 /**< Entropy coding mode is CAVLC */
} NV_ENC_H264_ENTROPY_CODING_MODE;

/**
 * H.264 specific BDirect modes
 */
typedef enum _NV_ENC_H264_BDIRECT_MODE {
    NV_ENC_H264_BDIRECT_MODE_AUTOSELECT
    = 0x0, /**< BDirect mode is auto selected by the encoder driver */
    NV_ENC_H264_BDIRECT_MODE_DISABLE = 0x1, /**< Disable BDirect mode */
    NV_ENC_H264_BDIRECT_MODE_TEMPORAL = 0x2, /**< Temporal BDirect mode */
    NV_ENC_H264_BDIRECT_MODE_SPATIAL = 0x3 /**< Spatial BDirect mode */
} NV_ENC_H264_BDIRECT_MODE;

/**
 * H.264 specific FMO usage
 */
typedef enum _NV_ENC_H264_FMO_MODE {
    NV_ENC_H264_FMO_AUTOSELECT = 0x0, /**< FMO usage is auto selected by the encoder driver */
    NV_ENC_H264_FMO_ENABLE = 0x1, /**< Enable FMO */
    NV_ENC_H264_FMO_DISABLE = 0x2, /**< Disable FMO */
} NV_ENC_H264_FMO_MODE;

/**
 * H.264 specific Adaptive Transform modes
 */
typedef enum _NV_ENC_H264_ADAPTIVE_TRANSFORM_MODE {
    NV_ENC_H264_ADAPTIVE_TRANSFORM_AUTOSELECT
    = 0x0, /**< Adaptive Transform 8x8 mode is auto selected by the encoder driver*/
    NV_ENC_H264_ADAPTIVE_TRANSFORM_DISABLE = 0x1, /**< Adaptive Transform 8x8 mode disabled */
    NV_ENC_H264_ADAPTIVE_TRANSFORM_ENABLE = 0x2, /**< Adaptive Transform 8x8 mode should be used */
} NV_ENC_H264_ADAPTIVE_TRANSFORM_MODE;

/**
 * Stereo frame packing modes.
 */
typedef enum _NV_ENC_STEREO_PACKING_MODE {
    NV_ENC_STEREO_PACKING_MODE_NONE = 0x0, /**< No Stereo packing required */
    NV_ENC_STEREO_PACKING_MODE_CHECKERBOARD
    = 0x1, /**< Checkerboard mode for packing stereo frames */
    NV_ENC_STEREO_PACKING_MODE_COLINTERLEAVE
    = 0x2, /**< Column Interleave mode for packing stereo frames */
    NV_ENC_STEREO_PACKING_MODE_ROWINTERLEAVE
    = 0x3, /**< Row Interleave mode for packing stereo frames */
    NV_ENC_STEREO_PACKING_MODE_SIDEBYSIDE = 0x4, /**< Side-by-side mode for packing stereo frames */
    NV_ENC_STEREO_PACKING_MODE_TOPBOTTOM = 0x5, /**< Top-Bottom mode for packing stereo frames */
    NV_ENC_STEREO_PACKING_MODE_FRAMESEQ
    = 0x6 /**< Frame Sequential mode for packing stereo frames */
} NV_ENC_STEREO_PACKING_MODE;

/**
 *  Input Resource type
 */
typedef enum _NV_ENC_INPUT_RESOURCE_TYPE {
    NV_ENC_INPUT_RESOURCE_TYPE_DIRECTX = 0x0, /**< input resource type is a directx9 surface*/
    NV_ENC_INPUT_RESOURCE_TYPE_CUDADEVICEPTR
    = 0x1, /**< input resource type is a cuda device pointer surface*/
    NV_ENC_INPUT_RESOURCE_TYPE_CUDAARRAY
    = 0x2, /**< input resource type is a cuda array surface.
                This array must be a 2D array and the CUDA_ARRAY3D_SURFACE_LDST
                flag must have been specified when creating it. */
    NV_ENC_INPUT_RESOURCE_TYPE_OPENGL_TEX = 0x3 /**< input resource type is an OpenGL texture */
} NV_ENC_INPUT_RESOURCE_TYPE;

/**
 *  Buffer usage
 */
typedef enum _NV_ENC_BUFFER_USAGE {
    NV_ENC_INPUT_IMAGE = 0x0, /**< Registered surface will be used for input image */
    NV_ENC_OUTPUT_MOTION_VECTOR
    = 0x1, /**< Registered surface will be used for output of H.264 ME only mode.
                This buffer usage type is not supported for HEVC ME only mode. */
    NV_ENC_OUTPUT_BITSTREAM
    = 0x2, /**< Registered surface will be used for output bitstream in encoding */
} NV_ENC_BUFFER_USAGE;

/**
 *  Encoder Device type
 */
typedef enum _NV_ENC_DEVICE_TYPE {
    NV_ENC_DEVICE_TYPE_DIRECTX = 0x0, /**< encode device type is a directx9 device */
    NV_ENC_DEVICE_TYPE_CUDA = 0x1, /**< encode device type is a cuda device */
    NV_ENC_DEVICE_TYPE_OPENGL = 0x2 /**< encode device type is an OpenGL device.
                                         Use of this device type is supported only on Linux */
} NV_ENC_DEVICE_TYPE;

/**
 * Number of reference frames
 */
typedef enum _NV_ENC_NUM_REF_FRAMES {
    NV_ENC_NUM_REF_FRAMES_AUTOSELECT
    = 0x0, /**< Number of reference frames is auto selected by the encoder driver */
    NV_ENC_NUM_REF_FRAMES_1 = 0x1, /**< Number of reference frames equal to 1 */
    NV_ENC_NUM_REF_FRAMES_2 = 0x2, /**< Number of reference frames equal to 2 */
    NV_ENC_NUM_REF_FRAMES_3 = 0x3, /**< Number of reference frames equal to 3 */
    NV_ENC_NUM_REF_FRAMES_4 = 0x4, /**< Number of reference frames equal to 4 */
    NV_ENC_NUM_REF_FRAMES_5 = 0x5, /**< Number of reference frames equal to 5 */
    NV_ENC_NUM_REF_FRAMES_6 = 0x6, /**< Number of reference frames equal to 6 */
    NV_ENC_NUM_REF_FRAMES_7 = 0x7 /**< Number of reference frames equal to 7 */
} NV_ENC_NUM_REF_FRAMES;

/**
 * Encoder capabilities enumeration.
 */
typedef enum _NV_ENC_CAPS {
    /**
     * Maximum number of B-Frames supported.
     */
    NV_ENC_CAPS_NUM_MAX_BFRAMES,

    /**
     * Rate control modes supported.
     * \n The API return value is a bitmask of the values in NV_ENC_PARAMS_RC_MODE.
     */
    NV_ENC_CAPS_SUPPORTED_RATECONTROL_MODES,

    /**
     * Indicates HW support for field mode encoding.
     * \n 0 : Interlaced mode encoding is not supported.
     * \n 1 : Interlaced field mode encoding is supported.
     * \n 2 : Interlaced frame encoding and field mode encoding are both supported.
     */
    NV_ENC_CAPS_SUPPORT_FIELD_ENCODING,

    /**
     * Indicates HW support for monochrome mode encoding.
     * \n 0 : Monochrome mode not supported.
     * \n 1 : Monochrome mode supported.
     */
    NV_ENC_CAPS_SUPPORT_MONOCHROME,

    /**
     * Indicates HW support for FMO.
     * \n 0 : FMO not supported.
     * \n 1 : FMO supported.
     */
    NV_ENC_CAPS_SUPPORT_FMO,

    /**
     * Indicates HW capability for Quarter pel motion estimation.
     * \n 0 : Quarter-Pel Motion Estimation not supported.
     * \n 1 : Quarter-Pel Motion Estimation supported.
     */
    NV_ENC_CAPS_SUPPORT_QPELMV,

    /**
     * H.264 specific. Indicates HW support for BDirect modes.
     * \n 0 : BDirect mode encoding not supported.
     * \n 1 : BDirect mode encoding supported.
     */
    NV_ENC_CAPS_SUPPORT_BDIRECT_MODE,

    /**
     * H264 specific. Indicates HW support for CABAC entropy coding mode.
     * \n 0 : CABAC entropy coding not supported.
     * \n 1 : CABAC entropy coding supported.
     */
    NV_ENC_CAPS_SUPPORT_CABAC,

    /**
     * Indicates HW support for Adaptive Transform.
     * \n 0 : Adaptive Transform not supported.
     * \n 1 : Adaptive Transform supported.
     */
    NV_ENC_CAPS_SUPPORT_ADAPTIVE_TRANSFORM,

    /**
     * Indicates HW support for Multi View Coding.
     * \n 0 : Multi View Coding not supported.
     * \n 1 : Multi View Coding supported.
     */
    NV_ENC_CAPS_SUPPORT_STEREO_MVC,

    /**
     * Indicates HW support for encoding Temporal layers.
     * \n 0 : Encoding Temporal layers not supported.
     * \n 1 : Encoding Temporal layers supported.
     */
    NV_ENC_CAPS_NUM_MAX_TEMPORAL_LAYERS,

    /**
     * Indicates HW support for Hierarchical P frames.
     * \n 0 : Hierarchical P frames not supported.
     * \n 1 : Hierarchical P frames supported.
     */
    NV_ENC_CAPS_SUPPORT_HIERARCHICAL_PFRAMES,

    /**
     * Indicates HW support for Hierarchical B frames.
     * \n 0 : Hierarchical B frames not supported.
     * \n 1 : Hierarchical B frames supported.
     */
    NV_ENC_CAPS_SUPPORT_HIERARCHICAL_BFRAMES,

    /**
     * Maximum Encoding level supported (See ::NV_ENC_LEVEL for details).
     */
    NV_ENC_CAPS_LEVEL_MAX,

    /**
     * Minimum Encoding level supported (See ::NV_ENC_LEVEL for details).
     */
    NV_ENC_CAPS_LEVEL_MIN,

    /**
     * Indicates HW support for separate colour plane encoding.
     * \n 0 : Separate colour plane encoding not supported.
     * \n 1 : Separate colour plane encoding supported.
     */
    NV_ENC_CAPS_SEPARATE_COLOUR_PLANE,

    /**
     * Maximum output width supported.
     */
    NV_ENC_CAPS_WIDTH_MAX,

    /**
     * Maximum output height supported.
     */
    NV_ENC_CAPS_HEIGHT_MAX,

    /**
     * Indicates Temporal Scalability Support.
     * \n 0 : Temporal SVC encoding not supported.
     * \n 1 : Temporal SVC encoding supported.
     */
    NV_ENC_CAPS_SUPPORT_TEMPORAL_SVC,

    /**
     * Indicates Dynamic Encode Resolution Change Support.
     * Support added from NvEncodeAPI version 2.0.
     * \n 0 : Dynamic Encode Resolution Change not supported.
     * \n 1 : Dynamic Encode Resolution Change supported.
     */
    NV_ENC_CAPS_SUPPORT_DYN_RES_CHANGE,

    /**
     * Indicates Dynamic Encode Bitrate Change Support.
     * Support added from NvEncodeAPI version 2.0.
     * \n 0 : Dynamic Encode bitrate change not supported.
     * \n 1 : Dynamic Encode bitrate change supported.
     */
    NV_ENC_CAPS_SUPPORT_DYN_BITRATE_CHANGE,

    /**
     * Indicates Forcing Constant QP On The Fly Support.
     * Support added from NvEncodeAPI version 2.0.
     * \n 0 : Forcing constant QP on the fly not supported.
     * \n 1 : Forcing constant QP on the fly supported.
     */
    NV_ENC_CAPS_SUPPORT_DYN_FORCE_CONSTQP,

    /**
     * Indicates Dynamic rate control mode Change Support.
     * \n 0 : Dynamic rate control mode change not supported.
     * \n 1 : Dynamic rate control mode change supported.
     */
    NV_ENC_CAPS_SUPPORT_DYN_RCMODE_CHANGE,

    /**
     * Indicates Subframe readback support for slice-based encoding. If this feature is supported,
     * it can be enabled by setting enableSubFrameWrite = 1. \n 0 : Subframe readback not supported.
     * \n 1 : Subframe readback supported.
     */
    NV_ENC_CAPS_SUPPORT_SUBFRAME_READBACK,

    /**
     * Indicates Constrained Encoding mode support.
     * Support added from NvEncodeAPI version 2.0.
     * \n 0 : Constrained encoding mode not supported.
     * \n 1 : Constrained encoding mode supported.
     * If this mode is supported client can enable this during initialization.
     * Client can then force a picture to be coded as constrained picture where
     * in-loop filtering is disabled across slice boundaries and prediction vectors for inter
     * macroblocks in each slice will be restricted to the slice region.
     */
    NV_ENC_CAPS_SUPPORT_CONSTRAINED_ENCODING,

    /**
     * Indicates Intra Refresh Mode Support.
     * Support added from NvEncodeAPI version 2.0.
     * \n 0 : Intra Refresh Mode not supported.
     * \n 1 : Intra Refresh Mode supported.
     */
    NV_ENC_CAPS_SUPPORT_INTRA_REFRESH,

    /**
     * Indicates Custom VBV Buffer Size support. It can be used for capping frame size.
     * Support added from NvEncodeAPI version 2.0.
     * \n 0 : Custom VBV buffer size specification from client, not supported.
     * \n 1 : Custom VBV buffer size specification from client, supported.
     */
    NV_ENC_CAPS_SUPPORT_CUSTOM_VBV_BUF_SIZE,

    /**
     * Indicates Dynamic Slice Mode Support.
     * Support added from NvEncodeAPI version 2.0.
     * \n 0 : Dynamic Slice Mode not supported.
     * \n 1 : Dynamic Slice Mode supported.
     */
    NV_ENC_CAPS_SUPPORT_DYNAMIC_SLICE_MODE,

    /**
     * Indicates Reference Picture Invalidation Support.
     * Support added from NvEncodeAPI version 2.0.
     * \n 0 : Reference Picture Invalidation not supported.
     * \n 1 : Reference Picture Invalidation supported.
     */
    NV_ENC_CAPS_SUPPORT_REF_PIC_INVALIDATION,

    /**
     * Indicates support for Pre-Processing.
     * The API return value is a bitmask of the values defined in ::NV_ENC_PREPROC_FLAGS
     */
    NV_ENC_CAPS_PREPROC_SUPPORT,

    /**
     * Indicates support Async mode.
     * \n 0 : Async Encode mode not supported.
     * \n 1 : Async Encode mode supported.
     */
    NV_ENC_CAPS_ASYNC_ENCODE_SUPPORT,

    /**
     * Maximum MBs per frame supported.
     */
    NV_ENC_CAPS_MB_NUM_MAX,

    /**
     * Maximum aggregate throughput in MBs per sec.
     */
    NV_ENC_CAPS_MB_PER_SEC_MAX,

    /**
     * Indicates HW support for YUV444 mode encoding.
     * \n 0 : YUV444 mode encoding not supported.
     * \n 1 : YUV444 mode encoding supported.
     */
    NV_ENC_CAPS_SUPPORT_YUV444_ENCODE,

    /**
     * Indicates HW support for lossless encoding.
     * \n 0 : lossless encoding not supported.
     * \n 1 : lossless encoding supported.
     */
    NV_ENC_CAPS_SUPPORT_LOSSLESS_ENCODE,

    /**
     * Indicates HW support for Sample Adaptive Offset.
     * \n 0 : SAO not supported.
     * \n 1 : SAO encoding supported.
     */
    NV_ENC_CAPS_SUPPORT_SAO,

    /**
     * Indicates HW support for Motion Estimation Only Mode.
     * \n 0 : MEOnly Mode not supported.
     * \n 1 : MEOnly Mode supported for I and P frames.
     * \n 2 : MEOnly Mode supported for I, P and B frames.
     */
    NV_ENC_CAPS_SUPPORT_MEONLY_MODE,

    /**
     * Indicates HW support for lookahead encoding (enableLookahead=1).
     * \n 0 : Lookahead not supported.
     * \n 1 : Lookahead supported.
     */
    NV_ENC_CAPS_SUPPORT_LOOKAHEAD,

    /**
     * Indicates HW support for temporal AQ encoding (enableTemporalAQ=1).
     * \n 0 : Temporal AQ not supported.
     * \n 1 : Temporal AQ supported.
     */
    NV_ENC_CAPS_SUPPORT_TEMPORAL_AQ,
    /**
     * Indicates HW support for 10 bit encoding.
     * \n 0 : 10 bit encoding not supported.
     * \n 1 : 10 bit encoding supported.
     */
    NV_ENC_CAPS_SUPPORT_10BIT_ENCODE,
    /**
     * Maximum number of Long Term Reference frames supported
     */
    NV_ENC_CAPS_NUM_MAX_LTR_FRAMES,

    /**
     * Indicates HW support for Weighted Prediction.
     * \n 0 : Weighted Prediction not supported.
     * \n 1 : Weighted Prediction supported.
     */
    NV_ENC_CAPS_SUPPORT_WEIGHTED_PREDICTION,

    /**
     * On managed (vGPU) platforms (Windows only), this API, in conjunction with other GRID
     * Management APIs, can be used to estimate the residual capacity of the hardware encoder on the
     * GPU as a percentage of the total available encoder capacity. This API can be called at any
     * time; i.e. during the encode session or before opening the encode session. If the available
     * encoder capacity is returned as zero, applications may choose to switch to software encoding
     * and continue to call this API (e.g. polling once per second) until capacity becomes
     * available.
     *
     * On bare metal (non-virtualized GPU) and linux platforms, this API always returns 100.
     */
    NV_ENC_CAPS_DYNAMIC_QUERY_ENCODER_CAPACITY,

    /**
     * Indicates B as reference support.
     * \n 0 : B as reference is not supported.
     * \n 1 : each B-Frame as reference is supported.
     * \n 2 : only Middle B-frame as reference is supported.
     */
    NV_ENC_CAPS_SUPPORT_BFRAME_REF_MODE,

    /**
     * Indicates HW support for Emphasis Level Map based delta QP computation.
     * \n 0 : Emphasis Level Map based delta QP not supported.
     * \n 1 : Emphasis Level Map based delta QP is supported.
     */
    NV_ENC_CAPS_SUPPORT_EMPHASIS_LEVEL_MAP,

    /**
     * Minimum input width supported.
     */
    NV_ENC_CAPS_WIDTH_MIN,

    /**
     * Minimum input height supported.
     */
    NV_ENC_CAPS_HEIGHT_MIN,

    /**
     * Indicates HW support for multiple reference frames.
     */
    NV_ENC_CAPS_SUPPORT_MULTIPLE_REF_FRAMES,

    /**
     * Indicates HW support for HEVC with alpha encoding.
     * \n 0 : HEVC with alpha encoding not supported.
     * \n 1 : HEVC with alpha encoding is supported.
     */
    NV_ENC_CAPS_SUPPORT_ALPHA_LAYER_ENCODING,

    /**
     * Indicates number of Encoding engines present on GPU.
     */
    NV_ENC_CAPS_NUM_ENCODER_ENGINES,

    /**
     * Indicates single slice intra refresh support.
     */
    NV_ENC_CAPS_SINGLE_SLICE_INTRA_REFRESH,

    /**
     * Reserved - Not to be used by clients.
     */
    NV_ENC_CAPS_EXPOSED_COUNT

} NV_ENC_CAPS;

/**
 *  HEVC CU SIZE
 */
typedef enum _NV_ENC_HEVC_CUSIZE {
    NV_ENC_HEVC_CUSIZE_AUTOSELECT = 0,
    NV_ENC_HEVC_CUSIZE_8x8 = 1,
    NV_ENC_HEVC_CUSIZE_16x16 = 2,
    NV_ENC_HEVC_CUSIZE_32x32 = 3,
    NV_ENC_HEVC_CUSIZE_64x64 = 4,
} NV_ENC_HEVC_CUSIZE;

/**
 *  AV1 PART SIZE
 */
typedef enum _NV_ENC_AV1_PART_SIZE {
    NV_ENC_AV1_PART_SIZE_AUTOSELECT = 0,
    NV_ENC_AV1_PART_SIZE_4x4 = 1,
    NV_ENC_AV1_PART_SIZE_8x8 = 2,
    NV_ENC_AV1_PART_SIZE_16x16 = 3,
    NV_ENC_AV1_PART_SIZE_32x32 = 4,
    NV_ENC_AV1_PART_SIZE_64x64 = 5,
} NV_ENC_AV1_PART_SIZE;

/**
 *  Enums related to fields in VUI parameters.
 */
typedef enum _NV_ENC_VUI_VIDEO_FORMAT {
    NV_ENC_VUI_VIDEO_FORMAT_COMPONENT = 0,
    NV_ENC_VUI_VIDEO_FORMAT_PAL = 1,
    NV_ENC_VUI_VIDEO_FORMAT_NTSC = 2,
    NV_ENC_VUI_VIDEO_FORMAT_SECAM = 3,
    NV_ENC_VUI_VIDEO_FORMAT_MAC = 4,
    NV_ENC_VUI_VIDEO_FORMAT_UNSPECIFIED = 5,
} NV_ENC_VUI_VIDEO_FORMAT;

typedef enum _NV_ENC_VUI_COLOR_PRIMARIES {
    NV_ENC_VUI_COLOR_PRIMARIES_UNDEFINED = 0,
    NV_ENC_VUI_COLOR_PRIMARIES_BT709 = 1,
    NV_ENC_VUI_COLOR_PRIMARIES_UNSPECIFIED = 2,
    NV_ENC_VUI_COLOR_PRIMARIES_RESERVED = 3,
    NV_ENC_VUI_COLOR_PRIMARIES_BT470M = 4,
    NV_ENC_VUI_COLOR_PRIMARIES_BT470BG = 5,
    NV_ENC_VUI_COLOR_PRIMARIES_SMPTE170M = 6,
    NV_ENC_VUI_COLOR_PRIMARIES_SMPTE240M = 7,
    NV_ENC_VUI_COLOR_PRIMARIES_FILM = 8,
    NV_ENC_VUI_COLOR_PRIMARIES_BT2020 = 9,
    NV_ENC_VUI_COLOR_PRIMARIES_SMPTE428 = 10,
    NV_ENC_VUI_COLOR_PRIMARIES_SMPTE431 = 11,
    NV_ENC_VUI_COLOR_PRIMARIES_SMPTE432 = 12,
    NV_ENC_VUI_COLOR_PRIMARIES_JEDEC_P22 = 22,
} NV_ENC_VUI_COLOR_PRIMARIES;

typedef enum _NV_ENC_VUI_TRANSFER_CHARACTERISTIC {
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_UNDEFINED = 0,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_BT709 = 1,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_UNSPECIFIED = 2,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_RESERVED = 3,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_BT470M = 4,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_BT470BG = 5,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_SMPTE170M = 6,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_SMPTE240M = 7,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_LINEAR = 8,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_LOG = 9,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_LOG_SQRT = 10,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_IEC61966_2_4 = 11,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_BT1361_ECG = 12,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_SRGB = 13,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_BT2020_10 = 14,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_BT2020_12 = 15,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_SMPTE2084 = 16,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_SMPTE428 = 17,
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC_ARIB_STD_B67 = 18,
} NV_ENC_VUI_TRANSFER_CHARACTERISTIC;

typedef enum _NV_ENC_VUI_MATRIX_COEFFS {
    NV_ENC_VUI_MATRIX_COEFFS_RGB = 0,
    NV_ENC_VUI_MATRIX_COEFFS_BT709 = 1,
    NV_ENC_VUI_MATRIX_COEFFS_UNSPECIFIED = 2,
    NV_ENC_VUI_MATRIX_COEFFS_RESERVED = 3,
    NV_ENC_VUI_MATRIX_COEFFS_FCC = 4,
    NV_ENC_VUI_MATRIX_COEFFS_BT470BG = 5,
    NV_ENC_VUI_MATRIX_COEFFS_SMPTE170M = 6,
    NV_ENC_VUI_MATRIX_COEFFS_SMPTE240M = 7,
    NV_ENC_VUI_MATRIX_COEFFS_YCGCO = 8,
    NV_ENC_VUI_MATRIX_COEFFS_BT2020_NCL = 9,
    NV_ENC_VUI_MATRIX_COEFFS_BT2020_CL = 10,
    NV_ENC_VUI_MATRIX_COEFFS_SMPTE2085 = 11,
} NV_ENC_VUI_MATRIX_COEFFS;

/**
 * Input struct for querying Encoding capabilities.
 */
typedef struct _NV_ENC_CAPS_PARAM {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_CAPS_PARAM_VER */
    NV_ENC_CAPS capsToQuery; /**< [in]: Specifies the encode capability to be queried. Client should
                                pass a member for ::NV_ENC_CAPS enum. */
    uint32_t reserved[62]; /**< [in]: Reserved and must be set to 0 */
} NV_ENC_CAPS_PARAM;

/** NV_ENC_CAPS_PARAM struct version. */
#define NV_ENC_CAPS_PARAM_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * Encoder Output parameters
 */
typedef struct _NV_ENC_ENCODE_OUT_PARAMS {
    uint32_t version; /**< [out]: Struct version. */
    uint32_t bitstreamSizeInBytes; /**< [out]: Encoded bitstream size in bytes */
    uint32_t reserved[62]; /**< [out]: Reserved and must be set to 0 */
} NV_ENC_ENCODE_OUT_PARAMS;

/** NV_ENC_ENCODE_OUT_PARAMS struct version. */
#define NV_ENC_ENCODE_OUT_PARAMS_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * Creation parameters for input buffer.
 */
typedef struct _NV_ENC_CREATE_INPUT_BUFFER {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_CREATE_INPUT_BUFFER_VER */
    uint32_t width; /**< [in]: Input frame width */
    uint32_t height; /**< [in]: Input frame height */
    NV_ENC_MEMORY_HEAP memoryHeap; /**< [in]: Deprecated. Do not use */
    NV_ENC_BUFFER_FORMAT bufferFmt; /**< [in]: Input buffer format */
    uint32_t reserved; /**< [in]: Reserved and must be set to 0 */
    NV_ENC_INPUT_PTR inputBuffer; /**< [out]: Pointer to input buffer */
    void* pSysMemBuffer; /**< [in]: Pointer to existing system memory buffer */
    uint32_t reserved1[57]; /**< [in]: Reserved and must be set to 0 */
    void* reserved2[63]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_CREATE_INPUT_BUFFER;

/** NV_ENC_CREATE_INPUT_BUFFER struct version. */
#define NV_ENC_CREATE_INPUT_BUFFER_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * Creation parameters for output bitstream buffer.
 */
typedef struct _NV_ENC_CREATE_BITSTREAM_BUFFER {
    uint32_t
        version; /**< [in]: Struct version. Must be set to ::NV_ENC_CREATE_BITSTREAM_BUFFER_VER */
    uint32_t size; /**< [in]: Deprecated. Do not use */
    NV_ENC_MEMORY_HEAP memoryHeap; /**< [in]: Deprecated. Do not use */
    uint32_t reserved; /**< [in]: Reserved and must be set to 0 */
    NV_ENC_OUTPUT_PTR bitstreamBuffer; /**< [out]: Pointer to the output bitstream buffer */
    void* bitstreamBufferPtr; /**< [out]: Reserved and should not be used */
    uint32_t reserved1[58]; /**< [in]: Reserved and should be set to 0 */
    void* reserved2[64]; /**< [in]: Reserved and should be set to NULL */
} NV_ENC_CREATE_BITSTREAM_BUFFER;

/** NV_ENC_CREATE_BITSTREAM_BUFFER struct version. */
#define NV_ENC_CREATE_BITSTREAM_BUFFER_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * Structs needed for ME only mode.
 */
typedef struct _NV_ENC_MVECTOR {
    int16_t mvx; /**< the x component of MV in quarter-pel units */
    int16_t mvy; /**< the y component of MV in quarter-pel units */
} NV_ENC_MVECTOR;

/**
 * Motion vector structure per macroblock for H264 motion estimation.
 */
typedef struct _NV_ENC_H264_MV_DATA {
    NV_ENC_MVECTOR mv[4]; /**< up to 4 vectors for 8x8 partition */
    uint8_t mbType; /**< 0 (I), 1 (P), 2 (IPCM), 3 (B) */
    uint8_t
        partitionType; /**< Specifies the block partition type. 0:16x16, 1:8x8, 2:16x8, 3:8x16 */
    uint16_t reserved; /**< reserved padding for alignment */
    uint32_t mbCost;
} NV_ENC_H264_MV_DATA;

/**
 * Motion vector structure per CU for HEVC motion estimation.
 */
typedef struct _NV_ENC_HEVC_MV_DATA {
    NV_ENC_MVECTOR mv[4]; /**< up to 4 vectors within a CU */
    uint8_t cuType; /**< 0 (I), 1(P) */
    uint8_t cuSize; /**< 0: 8x8, 1: 16x16, 2: 32x32, 3: 64x64 */
    uint8_t partitionMode; /**< The CU partition mode
                                0 (2Nx2N), 1 (2NxN), 2(Nx2N), 3 (NxN),
                                4 (2NxnU), 5 (2NxnD), 6(nLx2N), 7 (nRx2N) */
    uint8_t lastCUInCTB; /**< Marker to separate CUs in the current CTB from CUs in the next CTB */
} NV_ENC_HEVC_MV_DATA;

/**
 * Creation parameters for output motion vector buffer for ME only mode.
 */
typedef struct _NV_ENC_CREATE_MV_BUFFER {
    uint32_t version; /**< [in]: Struct version. Must be set to NV_ENC_CREATE_MV_BUFFER_VER */
    NV_ENC_OUTPUT_PTR mvBuffer; /**< [out]: Pointer to the output motion vector buffer */
    uint32_t reserved1[255]; /**< [in]: Reserved and should be set to 0 */
    void* reserved2[63]; /**< [in]: Reserved and should be set to NULL */
} NV_ENC_CREATE_MV_BUFFER;

/** NV_ENC_CREATE_MV_BUFFER struct version*/
#define NV_ENC_CREATE_MV_BUFFER_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * QP value for frames
 */
typedef struct _NV_ENC_QP {
    uint32_t
        qpInterP; /**< [in]: Specifies QP value for P-frame. Even though this field is uint32_t for
                     legacy reasons, the client should treat this as a signed parameter(int32_t) for
                     cases in which negative QP values are to be specified. */
    uint32_t
        qpInterB; /**< [in]: Specifies QP value for B-frame. Even though this field is uint32_t for
                     legacy reasons, the client should treat this as a signed parameter(int32_t) for
                     cases in which negative QP values are to be specified. */
    uint32_t
        qpIntra; /**< [in]: Specifies QP value for Intra Frame. Even though this field is uint32_t
                    for legacy reasons, the client should treat this as a signed parameter(int32_t)
                    for cases in which negative QP values are to be specified. */
} NV_ENC_QP;

/**
 * Rate Control Configuration Parameters
 */
typedef struct _NV_ENC_RC_PARAMS {
    uint32_t version;
    NV_ENC_PARAMS_RC_MODE
        rateControlMode; /**< [in]: Specifies the rate control mode. Check support for various rate
                            control modes using ::NV_ENC_CAPS_SUPPORTED_RATECONTROL_MODES caps. */
    NV_ENC_QP constQP; /**< [in]: Specifies the initial QP to be used for encoding, these values
                          would be used for all frames if in Constant QP mode. */
    uint32_t
        averageBitRate; /**< [in]: Specifies the average bitrate(in bits/sec) used for encoding. */
    uint32_t maxBitRate; /**< [in]: Specifies the maximum bitrate for the encoded output. This is
                            used for VBR and ignored for CBR mode. */
    uint32_t vbvBufferSize; /**< [in]: Specifies the VBV(HRD) buffer size. in bits. Set 0 to use the
                               default VBV  buffer size. */
    uint32_t vbvInitialDelay; /**< [in]: Specifies the VBV(HRD) initial delay in bits. Set 0 to use
                                 the default VBV  initial delay .*/
    uint32_t enableMinQP : 1; /**< [in]: Set this to 1 if minimum QP used for rate control. */
    uint32_t enableMaxQP : 1; /**< [in]: Set this to 1 if maximum QP used for rate control. */
    uint32_t enableInitialRCQP : 1; /**< [in]: Set this to 1 if user supplied initial QP is used for
                                       rate control. */
    uint32_t enableAQ : 1; /**< [in]: Set this to 1 to enable adaptive quantization (Spatial). */
    uint32_t reservedBitField1 : 1; /**< [in]: Reserved bitfields and must be set to 0. */
    uint32_t enableLookahead : 1; /**< [in]: Set this to 1 to enable lookahead with depth
                                     <lookaheadDepth> (if lookahead is enabled, input frames must
                                     remain available to the encoder until encode completion) */
    uint32_t disableIadapt : 1; /**< [in]: Set this to 1 to disable adaptive I-frame insertion at
                                   scene cuts (only has an effect when lookahead is enabled) */
    uint32_t disableBadapt : 1; /**< [in]: Set this to 1 to disable adaptive B-frame decision (only
                                   has an effect when lookahead is enabled) */
    uint32_t enableTemporalAQ : 1; /**< [in]: Set this to 1 to enable temporal AQ */
    uint32_t zeroReorderDelay : 1; /**< [in]: Set this to 1 to indicate zero latency operation (no
                                      reordering delay, num_reorder_frames=0) */
    uint32_t enableNonRefP : 1; /**< [in]: Set this to 1 to enable automatic insertion of
                                   non-reference P-frames (no effect if enablePTD=0) */
    uint32_t
        strictGOPTarget : 1; /**< [in]: Set this to 1 to minimize GOP-to-GOP rate fluctuations */
    uint32_t aqStrength : 4; /**< [in]: When AQ (Spatial) is enabled (i.e.
                                NV_ENC_RC_PARAMS::enableAQ is set), this field is used to specify AQ
                                strength. AQ strength scale is from 1 (low) - 15 (aggressive). If
                                not set, strength is auto selected by driver. */
    uint32_t reservedBitFields : 16; /**< [in]: Reserved bitfields and must be set to 0 */
    NV_ENC_QP minQP; /**< [in]: Specifies the minimum QP used for rate control. Client must set
                        NV_ENC_CONFIG::enableMinQP to 1. */
    NV_ENC_QP maxQP; /**< [in]: Specifies the maximum QP used for rate control. Client must set
                        NV_ENC_CONFIG::enableMaxQP to 1. */
    NV_ENC_QP initialRCQP; /**< [in]: Specifies the initial QP used for rate control. Client must
                              set NV_ENC_CONFIG::enableInitialRCQP to 1. */
    uint32_t temporallayerIdxMask; /**< [in]: Specifies the temporal layers (as a bitmask) whose QPs
                                      have changed. Valid max bitmask is
                                      [2^NV_ENC_CAPS_NUM_MAX_TEMPORAL_LAYERS - 1]. Applicable only
                                      for constant QP mode (NV_ENC_RC_PARAMS::rateControlMode =
                                      NV_ENC_PARAMS_RC_CONSTQP). */
    uint8_t temporalLayerQP[8]; /**< [in]: Specifies the temporal layer QPs used for rate control.
                                   Temporal layer index is used as the array index. Applicable only
                                   for constant QP mode (NV_ENC_RC_PARAMS::rateControlMode =
                                   NV_ENC_PARAMS_RC_CONSTQP). */
    uint8_t targetQuality; /**< [in]: Target CQ (Constant Quality) level for VBR mode (range 0-51
                              with 0-automatic)  */
    uint8_t targetQualityLSB; /**< [in]: Fractional part of target quality (as 8.8 fixed point
                                 format) */
    uint16_t lookaheadDepth; /**< [in]: Maximum depth of lookahead with range 0-(31 - number of B
                                frames). lookaheadDepth is only used if enableLookahead=1.*/
    uint8_t lowDelayKeyFrameScale; /**< [in]: Specifies the ratio of I frame bits to P frame bits in
                                      case of single frame VBV and CBR rate control mode, is set to
                                      2 by default for low latency tuning info and 1 by default for
                                      ultra low latency tuning info  */
    int8_t yDcQPIndexOffset; /**< [in]: Specifies the value of 'deltaQ_y_dc' in AV1.*/
    int8_t uDcQPIndexOffset; /**< [in]: Specifies the value of 'deltaQ_u_dc' in AV1.*/
    int8_t vDcQPIndexOffset; /**< [in]: Specifies the value of 'deltaQ_v_dc' in AV1 (for future use
                                only - deltaQ_v_dc is currently always internally set to same value
                                as deltaQ_u_dc). */
    NV_ENC_QP_MAP_MODE
        qpMapMode; /**< [in]: This flag is used to interpret values in array specified by
                      NV_ENC_PIC_PARAMS::qpDeltaMap. Set this to NV_ENC_QP_MAP_EMPHASIS to treat
                      values specified by NV_ENC_PIC_PARAMS::qpDeltaMap as Emphasis Level Map.
                              Emphasis Level can be assigned any value specified in enum
                      NV_ENC_EMPHASIS_MAP_LEVEL. Emphasis Level Map is used to specify regions to be
                      encoded at varying levels of quality. The hardware encoder adjusts the
                      quantization within the image as per the provided emphasis map, by adjusting
                      the quantization parameter (QP) assigned to each macroblock. This adjustment
                      is commonly called "Delta QP". The adjustment depends on the absolute QP
                      decided by the rate control algorithm, and is applied after the rate control
                      has decided each macroblock's QP. Since the Delta QP overrides rate control,
                      enabling Emphasis Level Map may violate bitrate and VBV buffer size
                      constraints. Emphasis Level Map is useful in situations where client has a
                      priori knowledge of the image complexity (e.g. via use of NVFBC's
                      Classification feature) and encoding those high-complexity areas at higher
                      quality (lower QP) is important, even at the possible cost of violating
                      bitrate/VBV buffer size constraints This feature is not supported when AQ(
                      Spatial/Temporal) is enabled. This feature is only supported for H264 codec
                      currently.

                              Set this to NV_ENC_QP_MAP_DELTA to treat values specified by
                      NV_ENC_PIC_PARAMS::qpDeltaMap as QP Delta. This specifies QP modifier to be
                      applied on top of the QP chosen by rate control

                              Set this to NV_ENC_QP_MAP_DISABLED to ignore
                      NV_ENC_PIC_PARAMS::qpDeltaMap values. In this case, qpDeltaMap should be set
                      to NULL.

                              Other values are reserved for future use.*/
    NV_ENC_MULTI_PASS multiPass; /**< [in]: This flag is used to enable multi-pass encoding for a
                                    given ::NV_ENC_PARAMS_RC_MODE. This flag is not valid for H264
                                    and HEVC MEOnly mode */
    uint32_t alphaLayerBitrateRatio; /**< [in]: Specifies the ratio in which bitrate should be split
                                        between base and alpha layer. A value 'x' for this field
                                        will split the target bitrate in a ratio of x : 1 between
                                        base and alpha layer. The default split ratio is 15.*/
    int8_t cbQPIndexOffset; /**< [in]: Specifies the value of 'chroma_qp_index_offset' in H264 /
                               'pps_cb_qp_offset' in HEVC / 'deltaQ_u_ac' in AV1.*/
    int8_t crQPIndexOffset; /**< [in]: Specifies the value of 'second_chroma_qp_index_offset' in
                               H264 / 'pps_cr_qp_offset' in HEVC / 'deltaQ_v_ac' in AV1 (for future
                               use only - deltaQ_v_ac is currently always internally set to same
                               value as deltaQ_u_ac). */
    uint16_t reserved2;
    uint32_t reserved[4];
} NV_ENC_RC_PARAMS;

/** macro for constructing the version field of ::_NV_ENC_RC_PARAMS */
#define NV_ENC_RC_PARAMS_VER NVENCAPI_STRUCT_VERSION(1)

#define MAX_NUM_CLOCK_TS 3

/**
 * Clock Timestamp set parameters
 * For H264, this structure is used to populate Picture Timing SEI when
 * NV_ENC_CONFIG_H264::enableTimeCode is set to 1. For HEVC, this structure is used to populate Time
 * Code SEI when NV_ENC_CONFIG_HEVC::enableTimeCodeSEI is set to 1. For more details, refer to Annex
 * D of ITU-T Specification.
 */

typedef struct _NV_ENC_CLOCK_TIMESTAMP_SET {
    uint32_t countingType : 1; /**< [in] Specifies the 'counting_type' */
    uint32_t discontinuityFlag : 1; /**< [in] Specifies the 'discontinuity_flag' */
    uint32_t cntDroppedFrames : 1; /**< [in] Specifies the 'cnt_dropped_flag' */
    uint32_t nFrames : 8; /**< [in] Specifies the value of 'n_frames' */
    uint32_t secondsValue : 6; /**< [in] Specifies the 'seconds_value' */
    uint32_t minutesValue : 6; /**< [in] Specifies the 'minutes_value' */
    uint32_t hoursValue : 5; /**< [in] Specifies the 'hours_value' */
    uint32_t reserved2 : 4; /**< [in] Reserved and must be set to 0 */
    uint32_t timeOffset; /**< [in] Specifies the 'time_offset_value' */
} NV_ENC_CLOCK_TIMESTAMP_SET;

typedef struct _NV_ENC_TIME_CODE {
    NV_ENC_DISPLAY_PIC_STRUCT displayPicStruct; /**< [in] Display picStruct */
    NV_ENC_CLOCK_TIMESTAMP_SET clockTimestamp[MAX_NUM_CLOCK_TS]; /**< [in] Clock Timestamp set */
} NV_ENC_TIME_CODE;

/**
 * \struct _NV_ENC_CONFIG_H264_VUI_PARAMETERS
 * H264 Video Usability Info parameters
 */
typedef struct _NV_ENC_CONFIG_H264_VUI_PARAMETERS {
    uint32_t overscanInfoPresentFlag; /**< [in]: If set to 1 , it specifies that the overscanInfo is
                                         present */
    uint32_t overscanInfo; /**< [in]: Specifies the overscan info(as defined in Annex E of the ITU-T
                              Specification). */
    uint32_t videoSignalTypePresentFlag; /**< [in]: If set to 1, it specifies  that the videoFormat,
                                            videoFullRangeFlag and colourDescriptionPresentFlag are
                                            present. */
    NV_ENC_VUI_VIDEO_FORMAT videoFormat; /**< [in]: Specifies the source video format(as defined in
                                            Annex E of the ITU-T Specification).*/
    uint32_t videoFullRangeFlag; /**< [in]: Specifies the output range of the luma and chroma
                                    samples(as defined in Annex E of the ITU-T Specification). */
    uint32_t
        colourDescriptionPresentFlag; /**< [in]: If set to 1, it specifies that the colourPrimaries,
                                         transferCharacteristics and colourMatrix are present. */
    NV_ENC_VUI_COLOR_PRIMARIES
        colourPrimaries; /**< [in]: Specifies color primaries for converting to RGB(as defined in
                            Annex E of the ITU-T Specification) */
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC
        transferCharacteristics; /**< [in]: Specifies the opto-electronic transfer characteristics
                                    to use (as defined in Annex E of the ITU-T Specification) */
    NV_ENC_VUI_MATRIX_COEFFS colourMatrix; /**< [in]: Specifies the matrix coefficients used in
                                              deriving the luma and chroma from the RGB primaries
                                              (as defined in Annex E of the ITU-T Specification). */
    uint32_t chromaSampleLocationFlag; /**< [in]: If set to 1 , it specifies that the
                                          chromaSampleLocationTop and chromaSampleLocationBot are
                                          present.*/
    uint32_t chromaSampleLocationTop; /**< [in]: Specifies the chroma sample location for top
                                         field(as defined in Annex E of the ITU-T Specification) */
    uint32_t chromaSampleLocationBot; /**< [in]: Specifies the chroma sample location for bottom
                                         field(as defined in Annex E of the ITU-T Specification) */
    uint32_t bitstreamRestrictionFlag; /**< [in]: If set to 1, it specifies the bitstream
                                          restriction parameters are present in the bitstream.*/
    uint32_t timingInfoPresentFlag; /**< [in]: If set to 1, it specifies that the timingInfo is
                                       present and the 'numUnitInTicks' and 'timeScale' fields are
                                       specified by the application. */
    /**< [in]: If not set, the timingInfo may still be present with timing related fields calculated
     * internally basedon the frame rate specified by the application. */
    uint32_t numUnitInTicks; /**< [in]: Specifies the number of time units of the clock(as defined
                                in Annex E of the ITU-T Specification). */
    uint32_t timeScale; /**< [in]: Specifies the frquency of the clock(as defined in Annex E of the
                           ITU-T Specification). */
    uint32_t reserved[12]; /**< [in]: Reserved and must be set to 0 */
} NV_ENC_CONFIG_H264_VUI_PARAMETERS;

typedef NV_ENC_CONFIG_H264_VUI_PARAMETERS NV_ENC_CONFIG_HEVC_VUI_PARAMETERS;

/**
 * \struct _NVENC_EXTERNAL_ME_HINT_COUNTS_PER_BLOCKTYPE
 * External motion vector hint counts per block type.
 * H264 and AV1 support multiple hint while HEVC supports one hint for each valid candidate.
 */
typedef struct _NVENC_EXTERNAL_ME_HINT_COUNTS_PER_BLOCKTYPE {
    uint32_t numCandsPerBlk16x16 : 4; /**< [in]: Supported for H264, HEVC. It Specifies the number
                                         of candidates per 16x16 block. */
    uint32_t numCandsPerBlk16x8 : 4; /**< [in]: Supported for H264 only. Specifies the number of
                                        candidates per 16x8 block. */
    uint32_t numCandsPerBlk8x16 : 4; /**< [in]: Supported for H264 only. Specifies the number of
                                        candidates per 8x16 block. */
    uint32_t numCandsPerBlk8x8 : 4; /**< [in]: Supported for H264, HEVC. Specifies the number of
                                       candidates per 8x8 block. */
    uint32_t numCandsPerSb : 8; /**< [in]: Supported for AV1 only. Specifies the number of
                                   candidates per SB. */
    uint32_t reserved : 8; /**< [in]: Reserved for padding. */
    uint32_t reserved1[3]; /**< [in]: Reserved for future use. */
} NVENC_EXTERNAL_ME_HINT_COUNTS_PER_BLOCKTYPE;

/**
 * \struct _NVENC_EXTERNAL_ME_HINT
 * External Motion Vector hint structure for H264 and HEVC.
 */
typedef struct _NVENC_EXTERNAL_ME_HINT {
    int32_t mvx : 12; /**< [in]: Specifies the x component of integer pixel MV (relative to current
                         MB) S12.0. */
    int32_t mvy : 10; /**< [in]: Specifies the y component of integer pixel MV (relative to current
                         MB) S10.0 .*/
    int32_t
        refidx : 5; /**< [in]: Specifies the reference index (31=invalid). Current we support only 1
                       reference frame per direction for external hints, so \p refidx must be 0. */
    int32_t dir : 1; /**< [in]: Specifies the direction of motion estimation . 0=L0 1=L1.*/
    int32_t partType : 2; /**< [in]: Specifies the block partition type.0=16x16 1=16x8 2=8x16 3=8x8
                             (blocks in partition must be consecutive).*/
    int32_t lastofPart : 1; /**< [in]: Set to 1 for the last MV of (sub) partition  */
    int32_t lastOfMB : 1; /**< [in]: Set to 1 for the last MV of macroblock. */
} NVENC_EXTERNAL_ME_HINT;

/**
 * \struct _NVENC_EXTERNAL_ME_SB_HINT
 * External Motion Vector SB hint structure for AV1
 */
typedef struct _NVENC_EXTERNAL_ME_SB_HINT {
    int16_t refidx : 5; /**< [in]: Specifies the reference index (31=invalid) */
    int16_t direction : 1; /**< [in]: Specifies the direction of motion estimation . 0=L0 1=L1.*/
    int16_t bi : 1; /**< [in]: Specifies reference mode 0=single mv, 1=compound mv */
    int16_t partition_type : 3; /**< [in]: Specifies the partition type: 0: 2NX2N, 1:2NxN, 2:Nx2N.
                                   reserved 3bits for future modes */
    int16_t
        x8 : 3; /**< [in]: Specifies the current partition's top left x position in 8 pixel unit */
    int16_t last_of_cu : 1; /**< [in]: Set to 1 for the last MV current CU */
    int16_t last_of_sb : 1; /**< [in]: Set to 1 for the last MV of current SB */
    int16_t reserved0 : 1; /**< [in]: Reserved and must be set to 0 */
    int16_t mvx : 14; /**< [in]: Specifies the x component of integer pixel MV (relative to current
                         MB) S12.2. */
    int16_t cu_size : 2; /**< [in]: Specifies the CU size: 0: 8x8, 1: 16x16, 2:32x32, 3:64x64 */
    int16_t mvy : 12; /**< [in]: Specifies the y component of integer pixel MV (relative to current
                         MB) S10.2 .*/
    int16_t
        y8 : 3; /**< [in]: Specifies the current partition's top left y position in 8 pixel unit */
    int16_t reserved1 : 1; /**< [in]: Reserved and must be set to 0 */
} NVENC_EXTERNAL_ME_SB_HINT;

/**
 * \struct _NV_ENC_CONFIG_H264
 * H264 encoder configuration parameters
 */
typedef struct _NV_ENC_CONFIG_H264 {
    uint32_t enableTemporalSVC : 1; /**< [in]: Set to 1 to enable SVC temporal*/
    uint32_t enableStereoMVC : 1; /**< [in]: Set to 1 to enable stereo MVC*/
    uint32_t hierarchicalPFrames : 1; /**< [in]: Set to 1 to enable hierarchical P Frames */
    uint32_t hierarchicalBFrames : 1; /**< [in]: Set to 1 to enable hierarchical B Frames */
    uint32_t outputBufferingPeriodSEI : 1; /**< [in]: Set to 1 to write SEI buffering period syntax
                                              in the bitstream */
    uint32_t outputPictureTimingSEI : 1; /**< [in]: Set to 1 to write SEI picture timing syntax in
                                            the bitstream. */
    uint32_t
        outputAUD : 1; /**< [in]: Set to 1 to write access unit delimiter syntax in bitstream */
    uint32_t disableSPSPPS : 1; /**< [in]: Set to 1 to disable writing of Sequence and Picture
                                   parameter info in bitstream */
    uint32_t outputFramePackingSEI : 1; /**< [in]: Set to 1 to enable writing of frame packing
                                           arrangement SEI messages to bitstream */
    uint32_t outputRecoveryPointSEI : 1; /**< [in]: Set to 1 to enable writing of recovery point SEI
                                            message */
    uint32_t enableIntraRefresh : 1; /**< [in]: Set to 1 to enable gradual decoder refresh or intra
                                        refresh. If the GOP structure uses B frames this will be
                                        ignored */
    uint32_t
        enableConstrainedEncoding : 1; /**< [in]: Set this to 1 to enable constrainedFrame encoding
                                          where each slice in the constrained picture is independent
                                          of other slices. Constrained encoding works only with
                                          rectangular slices. Check support for constrained encoding
                                          using ::NV_ENC_CAPS_SUPPORT_CONSTRAINED_ENCODING caps. */
    uint32_t repeatSPSPPS : 1; /**< [in]: Set to 1 to enable writing of Sequence and Picture
                                  parameter for every IDR frame */
    uint32_t enableVFR : 1; /**< [in]: Setting enableVFR=1 currently only sets the
                               fixed_frame_rate_flag=0 in the VUI but otherwise has no impact on the
                               encoder behavior. For more details please refer to E.1 VUI syntax of
                               H.264 standard. Note, however, that NVENC does not support VFR
                               encoding and rate control. */
    uint32_t
        enableLTR : 1; /**< [in]: Set to 1 to enable LTR (Long Term Reference) frame support. LTR
                          can be used in two modes: "LTR Trust" mode and "LTR Per Picture" mode. LTR
                          Trust mode: In this mode, ltrNumFrames pictures after IDR are
                          automatically marked as LTR. This mode is enabled by setting ltrTrustMode
                          = 1. Use of LTR Trust mode is strongly discouraged as this mode may be
                          deprecated in future. LTR Per Picture mode: In this mode, client can
                          control whether the current picture should be marked as LTR. Enable this
                          mode by setting ltrTrustMode = 0 and ltrMarkFrame = 1 for the picture to
                          be marked as LTR. This is the preferred mode for using LTR. Note that LTRs
                          are not supported if encoding session is configured with B-frames */
    uint32_t
        qpPrimeYZeroTransformBypassFlag : 1; /**< [in]: To enable lossless encode set this to 1, set
                                                QP to 0 and RC_mode to NV_ENC_PARAMS_RC_CONSTQP and
                                                profile to HIGH_444_PREDICTIVE_PROFILE. Check
                                                support for lossless encoding using
                                                ::NV_ENC_CAPS_SUPPORT_LOSSLESS_ENCODE caps.  */
    uint32_t
        useConstrainedIntraPred : 1; /**< [in]: Set 1 to enable constrained intra prediction. */
    uint32_t
        enableFillerDataInsertion : 1; /**< [in]: Set to 1 to enable insertion of filler data in the
                                          bitstream. This flag will take effect only when one of the
                                          CBR rate control modes (NV_ENC_PARAMS_RC_CBR,
                                          NV_ENC_PARAMS_RC_CBR_HQ, NV_ENC_PARAMS_RC_CBR_LOWDELAY_HQ)
                                          is in use and both NV_ENC_INITIALIZE_PARAMS::frameRateNum
                                          and NV_ENC_INITIALIZE_PARAMS::frameRateDen are set to
                                          non-zero values. Setting this field when
                                                  NV_ENC_INITIALIZE_PARAMS::enableOutputInVidmem is
                                          also set is currently not supported and will make
                                          ::NvEncInitializeEncoder() return an error. */
    uint32_t disableSVCPrefixNalu : 1; /**< [in]: Set to 1 to disable writing of SVC Prefix NALU
                                          preceding each slice in bitstream. Applicable only when
                                          temporal SVC is enabled
                                          (NV_ENC_CONFIG_H264::enableTemporalSVC = 1). */
    uint32_t enableScalabilityInfoSEI : 1; /**< [in]: Set to 1 to enable writing of Scalability
                                              Information SEI message preceding each IDR picture in
                                              bitstream Applicable only when temporal SVC is enabled
                                              (NV_ENC_CONFIG_H264::enableTemporalSVC = 1). */
    uint32_t
        singleSliceIntraRefresh : 1; /**< [in]: Set to 1 to maintain single slice in frames during
                                        intra refresh. Check support for single slice intra refresh
                                        using ::NV_ENC_CAPS_SINGLE_SLICE_INTRA_REFRESH caps. This
                                        flag will be ignored if the value returned for
                                        ::NV_ENC_CAPS_SINGLE_SLICE_INTRA_REFRESH caps is false. */
    uint32_t enableTimeCode : 1; /**< [in]: Set to 1 to enable writing of clock timestamp sets in
                                    picture timing SEI.  Note that this flag will be ignored for
                                    D3D12 interface. */
    uint32_t reservedBitFields : 10; /**< [in]: Reserved bitfields and must be set to 0 */
    uint32_t level; /**< [in]: Specifies the encoding level. Client is recommended to set this to
                       NV_ENC_LEVEL_AUTOSELECT in order to enable the NvEncodeAPI interface to
                       select the correct level. */
    uint32_t idrPeriod; /**< [in]: Specifies the IDR interval. If not set, this is made equal to
                           gopLength in NV_ENC_CONFIG.Low latency application client can set IDR
                           interval to NVENC_INFINITE_GOPLENGTH so that IDR frames are not inserted
                           automatically. */
    uint32_t separateColourPlaneFlag; /**< [in]: Set to 1 to enable 4:4:4 separate colour planes */
    uint32_t disableDeblockingFilterIDC; /**< [in]: Specifies the deblocking filter mode.
                                            Permissible value range: [0,2]. This flag corresponds to
                                            the flag disable_deblocking_filter_idc specified in
                                            section 7.4.3 of H.264 specification, which specifies
                                            whether the operation of the deblocking filter shall be
                                            disabled across some block edges of the slice and
                                            specifies for which edges the filtering is disabled. See
                                            section 7.4.3 of H.264 specification for more details.*/
    uint32_t numTemporalLayers; /**< [in]: Specifies number of temporal layers to be used for
                                   hierarchical coding / temporal SVC. Valid value range is
                                   [1,::NV_ENC_CAPS_NUM_MAX_TEMPORAL_LAYERS] */
    uint32_t spsId; /**< [in]: Specifies the SPS id of the sequence header */
    uint32_t ppsId; /**< [in]: Specifies the PPS id of the picture header */
    NV_ENC_H264_ADAPTIVE_TRANSFORM_MODE
        adaptiveTransformMode; /**< [in]: Specifies the AdaptiveTransform Mode. Check support for
                                  AdaptiveTransform mode using
                                  ::NV_ENC_CAPS_SUPPORT_ADAPTIVE_TRANSFORM caps. */
    NV_ENC_H264_FMO_MODE fmoMode; /**< [in]: Specified the FMO Mode. Check support for FMO using
                                     ::NV_ENC_CAPS_SUPPORT_FMO caps. */
    NV_ENC_H264_BDIRECT_MODE
        bdirectMode; /**< [in]: Specifies the BDirect mode. Check support for BDirect mode using
                        ::NV_ENC_CAPS_SUPPORT_BDIRECT_MODE caps.*/
    NV_ENC_H264_ENTROPY_CODING_MODE
        entropyCodingMode; /**< [in]: Specifies the entropy coding mode. Check support for CABAC
                              mode using ::NV_ENC_CAPS_SUPPORT_CABAC caps. */
    NV_ENC_STEREO_PACKING_MODE stereoMode; /**< [in]: Specifies the stereo frame packing mode which
                                              is to be signaled in frame packing arrangement SEI */
    uint32_t intraRefreshPeriod; /**< [in]: Specifies the interval between successive intra refresh
                                    if enableIntrarefresh is set. Requires enableIntraRefresh to be
                                    set. Will be disabled if NV_ENC_CONFIG::gopLength is not set to
                                    NVENC_INFINITE_GOPLENGTH. */
    uint32_t intraRefreshCnt; /**< [in]: Specifies the length of intra refresh in number of frames
                                 for periodic intra refresh. This value should be smaller than
                                 intraRefreshPeriod */
    uint32_t
        maxNumRefFrames; /**< [in]: Specifies the DPB size used for encoding. Setting it to 0 will
                            let driver use the default DPB size. The low latency application which
                            wants to invalidate reference frame as an error resilience tool is
                            recommended to use a large DPB size so that the encoder can keep old
                            reference frames which can be used if recent frames are invalidated. */
    uint32_t
        sliceMode; /**< [in]: This parameter in conjunction with sliceModeData specifies the way in
                      which the picture is divided into slices sliceMode = 0 MB based slices,
                      sliceMode = 1 Byte based slices, sliceMode = 2 MB row based slices, sliceMode
                      = 3 numSlices in Picture. When forceIntraRefreshWithFrameCnt is set it will
                      have priority over sliceMode setting When sliceMode == 0 and sliceModeData ==
                      0 whole picture will be coded with one slice */
    uint32_t sliceModeData; /**< [in]: Specifies the parameter needed for sliceMode. For:
                                       sliceMode = 0, sliceModeData specifies # of MBs in each slice
                               (except last slice) sliceMode = 1, sliceModeData specifies maximum #
                               of bytes in each slice (except last slice) sliceMode = 2,
                               sliceModeData specifies # of MB rows in each slice (except last
                               slice) sliceMode = 3, sliceModeData specifies number of slices in the
                               picture. Driver will divide picture into slices optimally */
    NV_ENC_CONFIG_H264_VUI_PARAMETERS
        h264VUIParameters; /**< [in]: Specifies the H264 video usability info parameters */
    uint32_t ltrNumFrames; /**< [in]: Specifies the number of LTR frames. This parameter has
                              different meaning in two LTR modes. In "LTR Trust" mode (ltrTrustMode
                              = 1), encoder will mark the first ltrNumFrames base layer reference
                              frames within each IDR interval as LTR. In "LTR Per Picture" mode
                              (ltrTrustMode = 0 and ltrMarkFrame = 1), ltrNumFrames specifies
                              maximum number of LTR frames in DPB. */
    uint32_t ltrTrustMode; /**< [in]: Specifies the LTR operating mode. See comments near
                              NV_ENC_CONFIG_H264::enableLTR for description of the two modes. Set to
                              1 to use "LTR Trust" mode of LTR operation. Clients are discouraged to
                              use "LTR Trust" mode as this mode may be deprecated in future
                              releases. Set to 0 when using "LTR Per Picture" mode of LTR operation.
                            */
    uint32_t chromaFormatIDC; /**< [in]: Specifies the chroma format. Should be set to 1 for yuv420
                                 input, 3 for yuv444 input. Check support for YUV444 encoding using
                                 ::NV_ENC_CAPS_SUPPORT_YUV444_ENCODE caps.*/
    uint32_t maxTemporalLayers; /**< [in]: Specifies the max temporal layer used for temporal SVC /
                                   hierarchical coding. Defaut value of this field is
                                   NV_ENC_CAPS::NV_ENC_CAPS_NUM_MAX_TEMPORAL_LAYERS. Note that the
                                   value NV_ENC_CONFIG_H264::maxNumRefFrames should be greater than
                                   or equal to (NV_ENC_CONFIG_H264::maxTemporalLayers - 2) * 2, for
                                   NV_ENC_CONFIG_H264::maxTemporalLayers >= 2.*/
    NV_ENC_BFRAME_REF_MODE
        useBFramesAsRef; /**< [in]: Specifies the B-Frame as reference mode. Check support for
                            useBFramesAsRef mode using ::NV_ENC_CAPS_SUPPORT_BFRAME_REF_MODE caps.*/
    NV_ENC_NUM_REF_FRAMES
        numRefL0; /**< [in]: Specifies max number of reference frames in reference picture list L0,
                     that can be used by hardware for prediction of a frame. Check support for
                     numRefL0 using ::NV_ENC_CAPS_SUPPORT_MULTIPLE_REF_FRAMES caps. */
    NV_ENC_NUM_REF_FRAMES
        numRefL1; /**< [in]: Specifies max number of reference frames in reference picture list L1,
                     that can be used by hardware for prediction of a frame. Check support for
                     numRefL1 using ::NV_ENC_CAPS_SUPPORT_MULTIPLE_REF_FRAMES caps. */

    uint32_t reserved1[267]; /**< [in]: Reserved and must be set to 0 */
    void* reserved2[64]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_CONFIG_H264;

/**
 * \struct _NV_ENC_CONFIG_HEVC
 * HEVC encoder configuration parameters to be set during initialization.
 */
typedef struct _NV_ENC_CONFIG_HEVC {
    uint32_t level; /**< [in]: Specifies the level of the encoded bitstream.*/
    uint32_t tier; /**< [in]: Specifies the level tier of the encoded bitstream.*/
    NV_ENC_HEVC_CUSIZE minCUSize; /**< [in]: Specifies the minimum size of luma coding unit.*/
    NV_ENC_HEVC_CUSIZE
        maxCUSize; /**< [in]: Specifies the maximum size of luma coding unit. Currently NVENC SDK
                      only supports maxCUSize equal to NV_ENC_HEVC_CUSIZE_32x32.*/
    uint32_t
        useConstrainedIntraPred : 1; /**< [in]: Set 1 to enable constrained intra prediction. */
    uint32_t disableDeblockAcrossSliceBoundary : 1; /**< [in]: Set 1 to disable in loop filtering
                                                       across slice boundary.*/
    uint32_t outputBufferingPeriodSEI : 1; /**< [in]: Set 1 to write SEI buffering period syntax in
                                              the bitstream */
    uint32_t outputPictureTimingSEI : 1; /**< [in]: Set 1 to write SEI picture timing syntax in the
                                            bitstream */
    uint32_t outputAUD : 1; /**< [in]: Set 1 to write Access Unit Delimiter syntax. */
    uint32_t
        enableLTR : 1; /**< [in]: Set to 1 to enable LTR (Long Term Reference) frame support. LTR
                          can be used in two modes: "LTR Trust" mode and "LTR Per Picture" mode. LTR
                          Trust mode: In this mode, ltrNumFrames pictures after IDR are
                          automatically marked as LTR. This mode is enabled by setting ltrTrustMode
                          = 1. Use of LTR Trust mode is strongly discouraged as this mode may be
                          deprecated in future releases. LTR Per Picture mode: In this mode, client
                          can control whether the current picture should be marked as LTR. Enable
                          this mode by setting ltrTrustMode = 0 and ltrMarkFrame = 1 for the picture
                          to be marked as LTR. This is the preferred mode for using LTR. Note that
                          LTRs are not supported if encoding session is configured with B-frames */
    uint32_t disableSPSPPS : 1; /**< [in]: Set 1 to disable VPS, SPS and PPS signaling in the
                                   bitstream. */
    uint32_t repeatSPSPPS : 1; /**< [in]: Set 1 to output VPS,SPS and PPS for every IDR frame.*/
    uint32_t
        enableIntraRefresh : 1; /**< [in]: Set 1 to enable gradual decoder refresh or intra refresh.
                                   If the GOP structure uses B frames this will be ignored */
    uint32_t chromaFormatIDC : 2; /**< [in]: Specifies the chroma format. Should be set to 1 for
                                     yuv420 input, 3 for yuv444 input.*/
    uint32_t pixelBitDepthMinus8 : 3; /**< [in]: Specifies pixel bit depth minus 8. Should be set to
                                         0 for 8 bit input, 2 for 10 bit input.*/
    uint32_t
        enableFillerDataInsertion : 1; /**< [in]: Set to 1 to enable insertion of filler data in the
                                          bitstream. This flag will take effect only when one of the
                                          CBR rate control modes (NV_ENC_PARAMS_RC_CBR,
                                          NV_ENC_PARAMS_RC_CBR_HQ, NV_ENC_PARAMS_RC_CBR_LOWDELAY_HQ)
                                          is in use and both NV_ENC_INITIALIZE_PARAMS::frameRateNum
                                          and NV_ENC_INITIALIZE_PARAMS::frameRateDen are set to
                                          non-zero values. Setting this field when
                                                  NV_ENC_INITIALIZE_PARAMS::enableOutputInVidmem is
                                          also set is currently not supported and will make
                                          ::NvEncInitializeEncoder() return an error. */
    uint32_t
        enableConstrainedEncoding : 1; /**< [in]: Set this to 1 to enable constrainedFrame encoding
                                          where each slice in the constrained picture is independent
                                          of other slices. Constrained encoding works only with
                                          rectangular slices. Check support for constrained encoding
                                          using ::NV_ENC_CAPS_SUPPORT_CONSTRAINED_ENCODING caps. */
    uint32_t enableAlphaLayerEncoding : 1; /**< [in]: Set this to 1 to enable HEVC encode with alpha
                                              layer. */
    uint32_t
        singleSliceIntraRefresh : 1; /**< [in]: Set this to 1 to maintain single slice frames during
                                        intra refresh. Check support for single slice intra refresh
                                        using ::NV_ENC_CAPS_SINGLE_SLICE_INTRA_REFRESH caps. This
                                        flag will be ignored if the value returned for
                                        ::NV_ENC_CAPS_SINGLE_SLICE_INTRA_REFRESH caps is false. */
    uint32_t outputRecoveryPointSEI : 1; /**< [in]: Set to 1 to enable writing of recovery point SEI
                                            message */
    uint32_t outputTimeCodeSEI : 1; /**< [in]: Set 1 to write SEI time code syntax in the bitstream.
                                       Note that this flag will be ignored for D3D12 interface.*/
    uint32_t reserved : 12; /**< [in]: Reserved bitfields.*/
    uint32_t idrPeriod; /**< [in]: Specifies the IDR interval. If not set, this is made equal to
                           gopLength in NV_ENC_CONFIG. Low latency application client can set IDR
                           interval to NVENC_INFINITE_GOPLENGTH so that IDR frames are not inserted
                           automatically. */
    uint32_t intraRefreshPeriod; /**< [in]: Specifies the interval between successive intra refresh
                                 if enableIntrarefresh is set. Requires enableIntraRefresh to be
                                 set. Will be disabled if NV_ENC_CONFIG::gopLength is not set to
                                 NVENC_INFINITE_GOPLENGTH. */
    uint32_t intraRefreshCnt; /**< [in]: Specifies the length of intra refresh in number of frames
                                 for periodic intra refresh. This value should be smaller than
                                 intraRefreshPeriod */
    uint32_t maxNumRefFramesInDPB; /**< [in]: Specifies the maximum number of references frames in
                                      the DPB.*/
    uint32_t ltrNumFrames; /**< [in]: This parameter has different meaning in two LTR modes.
                                      In "LTR Trust" mode (ltrTrustMode = 1), encoder will mark the
                              first ltrNumFrames base layer reference frames within each IDR
                              interval as LTR. In "LTR Per Picture" mode (ltrTrustMode = 0 and
                              ltrMarkFrame = 1), ltrNumFrames specifies maximum number of LTR frames
                              in DPB. These ltrNumFrames acts as a guidance to the encoder and are
                              not necessarily honored. To achieve a right balance between the
                              encoding quality and keeping LTR frames in the DPB queue, the encoder
                              can internally limit the number of LTR frames. The number of LTR
                              frames actually used depends upon the encoding preset being used;
                              Faster encoding presets will use fewer LTR frames.*/
    uint32_t vpsId; /**< [in]: Specifies the VPS id of the video parameter set */
    uint32_t spsId; /**< [in]: Specifies the SPS id of the sequence header */
    uint32_t ppsId; /**< [in]: Specifies the PPS id of the picture header */
    uint32_t sliceMode; /**< [in]: This parameter in conjunction with sliceModeData specifies the
                           way in which the picture is divided into slices sliceMode = 0 CTU based
                           slices, sliceMode = 1 Byte based slices, sliceMode = 2 CTU row based
                           slices, sliceMode = 3, numSlices in Picture When sliceMode == 0 and
                           sliceModeData == 0 whole picture will be coded with one slice */
    uint32_t sliceModeData; /**< [in]: Specifies the parameter needed for sliceMode. For:
                                        sliceMode = 0, sliceModeData specifies # of CTUs in each
                               slice (except last slice) sliceMode = 1, sliceModeData specifies
                               maximum # of bytes in each slice (except last slice) sliceMode = 2,
                               sliceModeData specifies # of CTU rows in each slice (except last
                               slice) sliceMode = 3, sliceModeData specifies number of slices in the
                               picture. Driver will divide picture into slices optimally */
    uint32_t maxTemporalLayersMinus1; /**< [in]: Specifies the max temporal layer used for
                                         hierarchical coding. */
    NV_ENC_CONFIG_HEVC_VUI_PARAMETERS
        hevcVUIParameters; /**< [in]: Specifies the HEVC video usability info parameters */
    uint32_t ltrTrustMode; /**< [in]: Specifies the LTR operating mode. See comments near
                              NV_ENC_CONFIG_HEVC::enableLTR for description of the two modes. Set to
                              1 to use "LTR Trust" mode of LTR operation. Clients are discouraged to
                              use "LTR Trust" mode as this mode may be deprecated in future
                              releases. Set to 0 when using "LTR Per Picture" mode of LTR operation.
                            */
    NV_ENC_BFRAME_REF_MODE useBFramesAsRef; /**< [in]: Specifies the B-Frame as reference mode.
                                               Check support for useBFramesAsRef mode using
                                               ::NV_ENC_CAPS_SUPPORT_BFRAME_REF_MODE caps.*/
    NV_ENC_NUM_REF_FRAMES
        numRefL0; /**< [in]: Specifies max number of reference frames in reference picture list L0,
                     that can be used by hardware for prediction of a frame. Check support for
                     numRefL0 using ::NV_ENC_CAPS_SUPPORT_MULTIPLE_REF_FRAMES caps. */
    NV_ENC_NUM_REF_FRAMES
        numRefL1; /**< [in]: Specifies max number of reference frames in reference picture list L1,
                     that can be used by hardware for prediction of a frame. Check support for
                     numRefL1 using ::NV_ENC_CAPS_SUPPORT_MULTIPLE_REF_FRAMES caps. */
    uint32_t reserved1[214]; /**< [in]: Reserved and must be set to 0.*/
    void* reserved2[64]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_CONFIG_HEVC;

#define NV_MAX_TILE_COLS_AV1 64
#define NV_MAX_TILE_ROWS_AV1 64

/**
 * \struct _NV_ENC_FILM_GRAIN_PARAMS_AV1
 * AV1 Film Grain Parameters structure
 */

typedef struct _NV_ENC_FILM_GRAIN_PARAMS_AV1 {
    uint32_t applyGrain : 1; /**< [in]: Set to 1 to specify film grain should be added to frame */
    uint32_t chromaScalingFromLuma : 1; /**< [in]: Set to 1 to specify the chroma scaling is
                                           inferred from luma scaling */
    uint32_t overlapFlag : 1; /**< [in]: Set to 1 to indicate that overlap between film grain blocks
                                 should be applied*/
    uint32_t clipToRestrictedRange : 1; /**< [in]: Set to 1 to clip values to restricted (studio)
                                           range after adding film grain  */
    uint32_t grainScalingMinus8 : 2; /**< [in]: Represents the shift - 8 applied to the values of
                                        the chroma component */
    uint32_t arCoeffLag : 2; /**< [in]: Specifies the number of auto-regressive coefficients for
                                luma and chroma */
    uint32_t numYPoints : 4; /**< [in]: Specifies the number of points for the piecewise linear
                                scaling function of the luma component */
    uint32_t numCbPoints : 4; /**< [in]: Specifies the number of points for the piecewise linear
                                 scaling function of the cb component */
    uint32_t numCrPoints : 4; /**< [in]: Specifies the number of points for the piecewise linear
                                 scaling function of the cr component */
    uint32_t arCoeffShiftMinus6 : 2; /**< [in]: specifies the range of the auto-regressive
                                        coefficients */
    uint32_t grainScaleShift : 2; /**< [in]: Specifies how much the Gaussian random numbers should
                                     be scaled down during the grain synthesi process  */
    uint32_t reserved1 : 8; /**< [in]: Reserved bits field - should be set to 0 */
    uint8_t pointYValue[14]; /**< [in]: pointYValue[i]: x coordinate for i-th point of luma
                                piecewise linear scaling function. Values on a scale of 0...255 */
    uint8_t pointYScaling[14]; /**< [in]: pointYScaling[i]: i-th point output value of luma
                                  piecewise linear scaling function */
    uint8_t pointCbValue[10]; /**< [in]: pointCbValue[i]: x coordinate for i-th point of cb
                                 piecewise linear scaling function. Values on a scale of 0...255 */
    uint8_t pointCbScaling[10]; /**< [in]: pointCbScaling[i]: i-th point output value of cb
                                   piecewise linear scaling function */
    uint8_t pointCrValue[10]; /**< [in]: pointCrValue[i]: x coordinate for i-th point of cr
                                 piecewise linear scaling function. Values on a scale of 0...255 */
    uint8_t pointCrScaling[10]; /**< [in]: pointCrScaling[i]: i-th point output value of cr
                                   piecewise linear scaling function */
    uint8_t arCoeffsYPlus128[24]; /**< [in]: Specifies auto-regressive coefficients used for the Y
                                     plane */
    uint8_t arCoeffsCbPlus128[25]; /**< [in]: Specifies auto-regressive coefficients used for the U
                                      plane */
    uint8_t arCoeffsCrPlus128[25]; /**< [in]: Specifies auto-regressive coefficients used for the V
                                      plane */
    uint8_t reserved2[2]; /**< [in]: Reserved bytes -  should be set to 0 */
    uint8_t cbMult; /**< [in]: Represents a multiplier for the cb component used in derivation of
                       the input index to the cb component scaling function */
    uint8_t cbLumaMult; /**< [in]: represents a multiplier for the average luma component used in
                           derivation of the input index to the cb component scaling function. */
    uint16_t cbOffset; /**< [in]: Represents an offset used in derivation of the input index to the
                          cb component scaling function */
    uint8_t crMult; /**< [in]: Represents a multiplier for the cr component used in derivation of
                       the input index to the cr component scaling function */
    uint8_t crLumaMult; /**< [in]: represents a multiplier for the average luma component used in
                           derivation of the input index to the cr component scaling function. */
    uint16_t crOffset; /**< [in]: Represents an offset used in derivation of the input index to the
                          cr component scaling function */
} NV_ENC_FILM_GRAIN_PARAMS_AV1;

/**
 * \struct _NV_ENC_CONFIG_AV1
 * AV1 encoder configuration parameters to be set during initialization.
 */
typedef struct _NV_ENC_CONFIG_AV1 {
    uint32_t level; /**< [in]: Specifies the level of the encoded bitstream.*/
    uint32_t tier; /**< [in]: Specifies the level tier of the encoded bitstream.*/
    NV_ENC_AV1_PART_SIZE
        minPartSize; /**< [in]: Specifies the minimum size of luma coding block partition.*/
    NV_ENC_AV1_PART_SIZE
        maxPartSize; /**< [in]: Specifies the maximum size of luma coding block partition.*/
    uint32_t outputAnnexBFormat : 1; /**< [in]: Set 1 to use Annex B format for bitstream output.*/
    uint32_t
        enableTimingInfo : 1; /**< [in]: Set 1 to write Timing Info into sequence/frame headers */
    uint32_t enableDecoderModelInfo : 1; /**< [in]: Set 1 to write Decoder Model Info into
                                            sequence/frame headers */
    uint32_t enableFrameIdNumbers : 1; /**< [in]: Set 1 to write Frame id numbers in  bitstream */
    uint32_t disableSeqHdr : 1; /**< [in]: Set 1 to disable Sequence Header signaling in the
                                   bitstream. */
    uint32_t repeatSeqHdr : 1; /**< [in]: Set 1 to output Sequence Header for every Key frame.*/
    uint32_t
        enableIntraRefresh : 1; /**< [in]: Set 1 to enable gradual decoder refresh or intra refresh.
                                   If the GOP structure uses B frames this will be ignored */
    uint32_t chromaFormatIDC : 2; /**< [in]: Specifies the chroma format. Should be set to 1 for
                                     yuv420 input (yuv444 input currently not supported).*/
    uint32_t enableBitstreamPadding : 1; /**< [in]: Set 1 to enable bitstream padding. */
    uint32_t
        enableCustomTileConfig : 1; /**< [in]: Set 1 to enable custom tile configuration:
                                       numTileColumns and numTileRows must have non zero values and
                                       tileWidths and tileHeights must point to a valid address  */
    uint32_t enableFilmGrainParams : 1; /**< [in]: Set 1 to enable custom film grain parameters:
                                           filmGrainParams must point to a valid address  */
    uint32_t
        inputPixelBitDepthMinus8 : 3; /**< [in]: Specifies pixel bit depth minus 8 of video input.
                                         Should be set to 0 for 8 bit input, 2 for 10 bit input.*/
    uint32_t
        pixelBitDepthMinus8 : 3; /**< [in]: Specifies pixel bit depth minus 8 of encoded video.
                                    Should be set to 0 for 8 bit, 2 for 10 bit. HW will do the
                                    bitdepth conversion internally from inputPixelBitDepthMinus8 ->
                                    pixelBitDepthMinus8 if bit dpeths differ Support for 8 bit input
                                    to 10 bit encode conversion only */
    uint32_t reserved : 14; /**< [in]: Reserved bitfields.*/
    uint32_t idrPeriod; /**< [in]: Specifies the IDR/Key frame interval. If not set, this is made
                           equal to gopLength in NV_ENC_CONFIG.Low latency application client can
                           set IDR interval to NVENC_INFINITE_GOPLENGTH so that IDR frames are not
                           inserted automatically. */
    uint32_t intraRefreshPeriod; /**< [in]: Specifies the interval between successive intra refresh
                                    if enableIntrarefresh is set. Requires enableIntraRefresh to be
                                    set. Will be disabled if NV_ENC_CONFIG::gopLength is not set to
                                    NVENC_INFINITE_GOPLENGTH. */
    uint32_t intraRefreshCnt; /**< [in]: Specifies the length of intra refresh in number of frames
                                 for periodic intra refresh. This value should be smaller than
                                 intraRefreshPeriod */
    uint32_t maxNumRefFramesInDPB; /**< [in]: Specifies the maximum number of references frames in
                                      the DPB.*/
    uint32_t
        numTileColumns; /**< [in]: This parameter in conjunction with the flag
                           enableCustomTileConfig and the array tileWidths[] specifies the way in
                           which the picture is divided into tile columns. When
                           enableCustomTileConfig == 0, the picture will be uniformly divided into
                           numTileColumns tile columns. If numTileColumns is not a power of 2, it
                           will be rounded down to the next power of 2 value. If numTileColumns ==
                           0, the picture will be coded with the smallest number of vertical tiles
                           as allowed by standard. When enableCustomTileConfig == 1, numTileColumns
                           must be > 0 and <= NV_MAX_TILE_COLS_AV1 and tileWidths must point to a
                           valid array of numTileColumns entries. Entry i specifies the width in
                           64x64 CTU unit of tile colum i. The sum of all the entries should be
                           equal to the picture width in 64x64 CTU units. */
    uint32_t
        numTileRows; /**< [in]: This parameter in conjunction with the flag enableCustomTileConfig
                        and the array tileHeights[] specifies the way in which the picture is
                        divided into tiles rows When enableCustomTileConfig == 0, the picture will
                        be uniformly divided into numTileRows tile rows. If numTileRows is not a
                        power of 2, it will be rounded down to the next power of 2 value. If
                        numTileRows == 0, the picture will be coded with the smallest number of
                        horizontal tiles as allowed by standard. When enableCustomTileConfig == 1,
                        numTileRows must be > 0 and <= NV_MAX_TILE_ROWS_AV1 and tileHeights must
                        point to a valid array of numTileRows entries. Entry i specifies the height
                        in 64x64 CTU unit of tile row i. The sum of all the entries should be equal
                        to the picture hieght in 64x64 CTU units. */
    uint32_t*
        tileWidths; /**< [in]: If enableCustomTileConfig == 1, tileWidths[i] specifies the width of
                       tile column i in 64x64 CTU unit, with 0 <= i <= numTileColumns -1. */
    uint32_t*
        tileHeights; /**< [in]: If enableCustomTileConfig == 1, tileHeights[i] specifies the height
                        of tile row i in 64x64 CTU unit, with 0 <= i <= numTileRows -1. */
    uint32_t maxTemporalLayersMinus1; /**< [in]: Specifies the max temporal layer used for
                                         hierarchical coding. */
    NV_ENC_VUI_COLOR_PRIMARIES
        colorPrimaries; /**< [in]: as defined in section of ISO/IEC 23091-4/ITU-T H.273 */
    NV_ENC_VUI_TRANSFER_CHARACTERISTIC
        transferCharacteristics; /**< [in]: as defined in section of ISO/IEC 23091-4/ITU-T H.273 */
    NV_ENC_VUI_MATRIX_COEFFS
        matrixCoefficients; /**< [in]: as defined in section of ISO/IEC 23091-4/ITU-T H.273 */
    uint32_t colorRange; /**< [in]: 0: studio swing representation - 1: full swing representation */
    uint32_t
        chromaSamplePosition; /**< [in]: 0: unknown
                                         1: Horizontally collocated with luma (0,0) sample, between
                                 two vertical samples 2: Co-located with luma (0,0) sample */
    NV_ENC_BFRAME_REF_MODE useBFramesAsRef; /**< [in]: Specifies the B-Frame as reference mode.
                                               Check support for useBFramesAsRef mode using
                                               ::NV_ENC_CAPS_SUPPORT_BFRAME_REF_MODE caps.*/
    NV_ENC_FILM_GRAIN_PARAMS_AV1*
        filmGrainParams; /**< [in]: If enableFilmGrainParams == 1, filmGrainParams must point to a
                            valid NV_ENC_FILM_GRAIN_PARAMS_AV1 structure */
    NV_ENC_NUM_REF_FRAMES
        numFwdRefs; /**< [in]: Specifies max number of forward reference frame used for prediction
                       of a frame. It must be in range 1-4 (Last, Last2, last3 and Golden). It's a
                       suggestive value not necessarily be honored always. */
    NV_ENC_NUM_REF_FRAMES
        numBwdRefs; /**< [in]: Specifies max number of L1 list reference frame used for prediction
                       of a frame. It must be in range 1-3 (Backward, Altref2, Altref). It's a
                       suggestive value not necessarily be honored always. */
    uint32_t reserved1[235]; /**< [in]: Reserved and must be set to 0.*/
    void* reserved2[62]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_CONFIG_AV1;

/**
 * \struct _NV_ENC_CONFIG_H264_MEONLY
 * H264 encoder configuration parameters for ME only Mode
 *
 */
typedef struct _NV_ENC_CONFIG_H264_MEONLY {
    uint32_t disablePartition16x16 : 1; /**< [in]: Disable Motion Estimation on 16x16 blocks*/
    uint32_t disablePartition8x16 : 1; /**< [in]: Disable Motion Estimation on 8x16 blocks*/
    uint32_t disablePartition16x8 : 1; /**< [in]: Disable Motion Estimation on 16x8 blocks*/
    uint32_t disablePartition8x8 : 1; /**< [in]: Disable Motion Estimation on 8x8 blocks*/
    uint32_t disableIntraSearch : 1; /**< [in]: Disable Intra search during Motion Estimation*/
    uint32_t bStereoEnable : 1; /**< [in]: Enable Stereo Mode for Motion Estimation where each view
                                   is independently executed*/
    uint32_t reserved : 26; /**< [in]: Reserved and must be set to 0 */
    uint32_t reserved1[255]; /**< [in]: Reserved and must be set to 0 */
    void* reserved2[64]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_CONFIG_H264_MEONLY;

/**
 * \struct _NV_ENC_CONFIG_HEVC_MEONLY
 * HEVC encoder configuration parameters for ME only Mode
 *
 */
typedef struct _NV_ENC_CONFIG_HEVC_MEONLY {
    uint32_t reserved[256]; /**< [in]: Reserved and must be set to 0 */
    void* reserved1[64]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_CONFIG_HEVC_MEONLY;

/**
 * \struct _NV_ENC_CODEC_CONFIG
 * Codec-specific encoder configuration parameters to be set during initialization.
 */
typedef union _NV_ENC_CODEC_CONFIG {
    NV_ENC_CONFIG_H264 h264Config; /**< [in]: Specifies the H.264-specific encoder configuration. */
    NV_ENC_CONFIG_HEVC hevcConfig; /**< [in]: Specifies the HEVC-specific encoder configuration. */
    NV_ENC_CONFIG_AV1 av1Config; /**< [in]: Specifies the AV1-specific encoder configuration. */
    NV_ENC_CONFIG_H264_MEONLY
        h264MeOnlyConfig; /**< [in]: Specifies the H.264-specific ME only encoder configuration. */
    NV_ENC_CONFIG_HEVC_MEONLY
        hevcMeOnlyConfig; /**< [in]: Specifies the HEVC-specific ME only encoder configuration. */
    uint32_t reserved[320]; /**< [in]: Reserved and must be set to 0 */
} NV_ENC_CODEC_CONFIG;

/**
 * \struct _NV_ENC_CONFIG
 * Encoder configuration parameters to be set during initialization.
 */
typedef struct _NV_ENC_CONFIG {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_CONFIG_VER. */
    GUID profileGUID; /**< [in]: Specifies the codec profile GUID. If client specifies \p
                         NV_ENC_CODEC_PROFILE_AUTOSELECT_GUID the NvEncodeAPI interface will select
                         the appropriate codec profile. */
    uint32_t gopLength; /**< [in]: Specifies the number of pictures in one GOP. Low latency
                           application client can set goplength to NVENC_INFINITE_GOPLENGTH so that
                           keyframes are not inserted automatically. */
    int32_t frameIntervalP; /**< [in]: Specifies the GOP pattern as follows: \p frameIntervalP = 0:
                               I, 1: IPP, 2: IBP, 3: IBBP  If goplength is set to
                               NVENC_INFINITE_GOPLENGTH \p frameIntervalP should be set to 1. */
    uint32_t monoChromeEncoding; /**< [in]: Set this to 1 to enable monochrome encoding for this
                                    session. */
    NV_ENC_PARAMS_FRAME_FIELD_MODE
        frameFieldMode; /**< [in]: Specifies the frame/field mode.
                                   Check support for field encoding using
                           ::NV_ENC_CAPS_SUPPORT_FIELD_ENCODING caps. Using a frameFieldMode other
                           than NV_ENC_PARAMS_FRAME_FIELD_MODE_FRAME for RGB input is not supported.
                         */
    NV_ENC_MV_PRECISION
        mvPrecision; /**< [in]: Specifies the desired motion vector prediction precision. */
    NV_ENC_RC_PARAMS rcParams; /**< [in]: Specifies the rate control parameters for the current
                                  encoding session. */
    NV_ENC_CODEC_CONFIG encodeCodecConfig; /**< [in]: Specifies the codec specific config parameters
                                              through this union. */
    uint32_t reserved[278]; /**< [in]: Reserved and must be set to 0 */
    void* reserved2[64]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_CONFIG;

/** macro for constructing the version field of ::_NV_ENC_CONFIG */
#define NV_ENC_CONFIG_VER (NVENCAPI_STRUCT_VERSION(8) | (1 << 31))

/**
 *  Tuning information of NVENC encoding (TuningInfo is not applicable to H264 and HEVC MEOnly
 * mode).
 */
typedef enum NV_ENC_TUNING_INFO {
    NV_ENC_TUNING_INFO_UNDEFINED = 0, /**< Undefined tuningInfo. Invalid value for encoding. */
    NV_ENC_TUNING_INFO_HIGH_QUALITY = 1, /**< Tune presets for latency tolerant encoding.*/
    NV_ENC_TUNING_INFO_LOW_LATENCY = 2, /**< Tune presets for low latency streaming.*/
    NV_ENC_TUNING_INFO_ULTRA_LOW_LATENCY = 3, /**< Tune presets for ultra low latency streaming.*/
    NV_ENC_TUNING_INFO_LOSSLESS = 4, /**< Tune presets for lossless encoding.*/
    NV_ENC_TUNING_INFO_COUNT /**< Count number of tuningInfos. Invalid value. */
} NV_ENC_TUNING_INFO;

/**
 * \struct _NV_ENC_INITIALIZE_PARAMS
 * Encode Session Initialization parameters.
 */
typedef struct _NV_ENC_INITIALIZE_PARAMS {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_INITIALIZE_PARAMS_VER. */
    GUID encodeGUID; /**< [in]: Specifies the Encode GUID for which the encoder is being created.
                        ::NvEncInitializeEncoder() API will fail if this is not set, or set to
                        unsupported value. */
    GUID presetGUID; /**< [in]: Specifies the preset for encoding. If the preset GUID is set then ,
                        the preset configuration will be applied before any other parameter. */
    uint32_t encodeWidth; /**< [in]: Specifies the encode width. If not set
                             ::NvEncInitializeEncoder() API will fail. */
    uint32_t encodeHeight; /**< [in]: Specifies the encode height. If not set
                              ::NvEncInitializeEncoder() API will fail. */
    uint32_t darWidth; /**< [in]: Specifies the display aspect ratio width (H264/HEVC) or the render
                          width (AV1). */
    uint32_t darHeight; /**< [in]: Specifies the display aspect ratio height (H264/HEVC) or the
                           render height (AV1). */
    uint32_t frameRateNum; /**< [in]: Specifies the numerator for frame rate used for encoding in
                              frames per second ( Frame rate = frameRateNum / frameRateDen ). */
    uint32_t frameRateDen; /**< [in]: Specifies the denominator for frame rate used for encoding in
                              frames per second ( Frame rate = frameRateNum / frameRateDen ). */
    uint32_t enableEncodeAsync; /**< [in]: Set this to 1 to enable asynchronous mode and is expected
                                   to use events to get picture completion notification. */
    uint32_t enablePTD; /**< [in]: Set this to 1 to enable the Picture Type Decision is be taken by
                           the NvEncodeAPI interface. */
    uint32_t reportSliceOffsets : 1; /**< [in]: Set this to 1 to enable reporting slice offsets in
                                        ::_NV_ENC_LOCK_BITSTREAM.
                                        NV_ENC_INITIALIZE_PARAMS::enableEncodeAsync must be set to 0
                                        to use this feature. Client must set this to 0 if
                                        NV_ENC_CONFIG_H264::sliceMode is 1 on Kepler GPUs */
    uint32_t
        enableSubFrameWrite : 1; /**< [in]: Set this to 1 to write out available bitstream to memory
                                    at subframe intervals. If enableSubFrameWrite = 1, then the
                                    hardware encoder returns data as soon as a slice (H264/HEVC) or
                                    tile (AV1) has completed encoding. This results in better
                                    encoding latency, but the downside is that the application has
                                    to keep polling via a call to nvEncLockBitstream API
                                    continuously to see if any encoded slice/tile data is available.
                                            Use this mode if you feel that the marginal reduction in
                                    latency from sub-frame encoding is worth the increase in
                                    complexity due to CPU-based polling. */
    uint32_t enableExternalMEHints : 1; /**< [in]: Set to 1 to enable external ME hints for the
                                           current frame. For NV_ENC_INITIALIZE_PARAMS::enablePTD=1
                                           with B frames, programming L1 hints is optional for B
                                           frames since Client doesn't know internal GOP structure.
                                                   NV_ENC_PIC_PARAMS::meHintRefPicDist should
                                           preferably be set with enablePTD=1. */
    uint32_t enableMEOnlyMode : 1; /**< [in]: Set to 1 to enable ME Only Mode .*/
    uint32_t
        enableWeightedPrediction : 1; /**< [in]: Set this to 1 to enable weighted prediction. Not
                                         supported if encode session is configured for B-Frames
                                         (i.e. NV_ENC_CONFIG::frameIntervalP > 1 or preset >=P3 when
                                         tuningInfo = ::NV_ENC_TUNING_INFO_HIGH_QUALITY or
                                                 tuningInfo = ::NV_ENC_TUNING_INFO_LOSSLESS. This is
                                         because preset >=p3 internally enables B frames when
                                         tuningInfo = ::NV_ENC_TUNING_INFO_HIGH_QUALITY or
                                         ::NV_ENC_TUNING_INFO_LOSSLESS). */
    uint32_t enableOutputInVidmem : 1; /**< [in]: Set this to 1 to enable output of NVENC in video
                                          memory buffer created by application. This feature is not
                                          supported for HEVC ME only mode. */
    uint32_t reservedBitFields : 26; /**< [in]: Reserved bitfields and must be set to 0 */
    uint32_t privDataSize; /**< [in]: Reserved private data buffer size and must be set to 0 */
    void* privData; /**< [in]: Reserved private data buffer and must be set to NULL */
    NV_ENC_CONFIG*
        encodeConfig; /**< [in]: Specifies the advanced codec specific structure. If client has sent
                         a valid codec config structure, it will override parameters set by the
                         NV_ENC_INITIALIZE_PARAMS::presetGUID parameter. If set to NULL the
                         NvEncodeAPI interface will use the NV_ENC_INITIALIZE_PARAMS::presetGUID to
                         set the codec specific parameters. Client can also optionally query the
                         NvEncodeAPI interface to get codec specific parameters for a presetGUID
                         using ::NvEncGetEncodePresetConfig() API. It can then modify (if required)
                         some of the codec config parameters and send down a custom config structure
                         as part of ::_NV_ENC_INITIALIZE_PARAMS. Even in this case client is
                         recommended to pass the same preset guid it has used in
                         ::NvEncGetEncodePresetConfig() API to query the config structure; as
                         NV_ENC_INITIALIZE_PARAMS::presetGUID. This will not override the custom
                         config structure but will be used to determine other Encoder HW specific
                         parameters not exposed in the API. */
    uint32_t maxEncodeWidth; /**< [in]: Maximum encode width to be used for current Encode session.
                                        Client should allocate output buffers according to this
                                dimension for dynamic resolution change. If set to 0, Encoder will
                                not allow dynamic resolution change. */
    uint32_t maxEncodeHeight; /**< [in]: Maximum encode height to be allowed for current Encode
                                 session. Client should allocate output buffers according to this
                                 dimension for dynamic resolution change. If set to 0, Encode will
                                 not allow dynamic resolution change. */
    NVENC_EXTERNAL_ME_HINT_COUNTS_PER_BLOCKTYPE maxMEHintCountsPerBlock
        [2]; /**< [in]: If Client wants to pass external motion vectors in
                NV_ENC_PIC_PARAMS::meExternalHints buffer it must specify the maximum number of hint
                candidates per block per direction for the encode session. The
                NV_ENC_INITIALIZE_PARAMS::maxMEHintCountsPerBlock[0] is for L0 predictors and
                NV_ENC_INITIALIZE_PARAMS::maxMEHintCountsPerBlock[1] is for L1 predictors. This
                client must also set NV_ENC_INITIALIZE_PARAMS::enableExternalMEHints to 1. */
    NV_ENC_TUNING_INFO tuningInfo; /**< [in]: Tuning Info of NVENC encoding(TuningInfo is not
                                      applicable to H264 and HEVC meonly mode). */
    NV_ENC_BUFFER_FORMAT
        bufferFormat; /**< [in]: Input buffer format. Used only when DX12 interface type is used */
    uint32_t reserved[287]; /**< [in]: Reserved and must be set to 0 */
    void* reserved2[64]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_INITIALIZE_PARAMS;

/** macro for constructing the version field of ::_NV_ENC_INITIALIZE_PARAMS */
#define NV_ENC_INITIALIZE_PARAMS_VER (NVENCAPI_STRUCT_VERSION(5) | (1 << 31))

/**
 * \struct _NV_ENC_RECONFIGURE_PARAMS
 * Encode Session Reconfigured parameters.
 */
typedef struct _NV_ENC_RECONFIGURE_PARAMS {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_RECONFIGURE_PARAMS_VER. */
    NV_ENC_INITIALIZE_PARAMS
        reInitEncodeParams; /**< [in]: Encoder session re-initialization parameters.
                                       If reInitEncodeParams.encodeConfig is NULL and
                                       reInitEncodeParams.presetGUID is the same as the preset
                                       GUID specified on the call to NvEncInitializeEncoder(),
                                       EncodeAPI will continue to use the existing encode
                                       configuration.
                                       If reInitEncodeParams.encodeConfig is NULL and
                                       reInitEncodeParams.presetGUID is different from the preset
                                       GUID specified on the call to NvEncInitializeEncoder(),
                                       EncodeAPI will try to use the default configuration for
                                       the preset specified by reInitEncodeParams.presetGUID.
                                       In this case, reconfiguration may fail if the new
                                       configuration is incompatible with the existing
                                       configuration (e.g. the new configuration results in
                                       a change in the GOP structure). */
    uint32_t resetEncoder : 1; /**< [in]: This resets the rate control states and other internal
                                  encoder states. This should be used only with an IDR frame. If
                                  NV_ENC_INITIALIZE_PARAMS::enablePTD is set to 1, encoder will
                                  force the frame type to IDR */
    uint32_t forceIDR : 1; /**< [in]: Encode the current picture as an IDR picture. This flag is
                              only valid when Picture type decision is taken by the Encoder
                                      [_NV_ENC_INITIALIZE_PARAMS::enablePTD == 1]. */
    uint32_t reserved : 30;

} NV_ENC_RECONFIGURE_PARAMS;

/** macro for constructing the version field of ::_NV_ENC_RECONFIGURE_PARAMS */
#define NV_ENC_RECONFIGURE_PARAMS_VER (NVENCAPI_STRUCT_VERSION(1) | (1 << 31))

/**
 * \struct _NV_ENC_PRESET_CONFIG
 * Encoder preset config
 */
typedef struct _NV_ENC_PRESET_CONFIG {
    uint32_t version; /**< [in]:  Struct version. Must be set to ::NV_ENC_PRESET_CONFIG_VER. */
    NV_ENC_CONFIG
        presetCfg; /**< [out]: preset config returned by the Nvidia Video Encoder interface. */
    uint32_t reserved1[255]; /**< [in]: Reserved and must be set to 0 */
    void* reserved2[64]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_PRESET_CONFIG;

/** macro for constructing the version field of ::_NV_ENC_PRESET_CONFIG */
#define NV_ENC_PRESET_CONFIG_VER (NVENCAPI_STRUCT_VERSION(4) | (1 << 31))

/**
 * \struct _NV_ENC_PIC_PARAMS_MVC
 * MVC-specific parameters to be sent on a per-frame basis.
 */
typedef struct _NV_ENC_PIC_PARAMS_MVC {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_PIC_PARAMS_MVC_VER. */
    uint32_t viewID; /**< [in]: Specifies the view ID associated with the current input view. */
    uint32_t
        temporalID; /**< [in]: Specifies the temporal ID associated with the current input view. */
    uint32_t priorityID; /**< [in]: Specifies the priority ID associated with the current input
                            view. Reserved and ignored by the NvEncodeAPI interface. */
    uint32_t reserved1[12]; /**< [in]: Reserved and must be set to 0. */
    void* reserved2[8]; /**< [in]: Reserved and must be set to NULL. */
} NV_ENC_PIC_PARAMS_MVC;

/** macro for constructing the version field of ::_NV_ENC_PIC_PARAMS_MVC */
#define NV_ENC_PIC_PARAMS_MVC_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * \union _NV_ENC_PIC_PARAMS_H264_EXT
 * H264 extension  picture parameters
 */
typedef union _NV_ENC_PIC_PARAMS_H264_EXT {
    NV_ENC_PIC_PARAMS_MVC mvcPicParams; /**< [in]: Specifies the MVC picture parameters. */
    uint32_t reserved1[32]; /**< [in]: Reserved and must be set to 0.        */
} NV_ENC_PIC_PARAMS_H264_EXT;

/**
 * \struct _NV_ENC_SEI_PAYLOAD
 *  User SEI message
 */
typedef struct _NV_ENC_SEI_PAYLOAD {
    uint32_t payloadSize; /**< [in] SEI payload size in bytes. SEI payload must be byte aligned, as
                             described in Annex D */
    uint32_t payloadType; /**< [in] SEI payload types and syntax can be found in Annex D of the
                             H.264 Specification. */
    uint8_t* payload; /**< [in] pointer to user data */
} NV_ENC_SEI_PAYLOAD;

#define NV_ENC_H264_SEI_PAYLOAD NV_ENC_SEI_PAYLOAD

/**
 * \struct _NV_ENC_PIC_PARAMS_H264
 * H264 specific enc pic params. sent on a per frame basis.
 */
typedef struct _NV_ENC_PIC_PARAMS_H264 {
    uint32_t displayPOCSyntax; /**< [in]: Specifies the display POC syntax This is required to be
                                  set if client is handling the picture type decision. */
    uint32_t reserved3; /**< [in]: Reserved and must be set to 0 */
    uint32_t refPicFlag; /**< [in]: Set to 1 for a reference picture. This is ignored if
                            NV_ENC_INITIALIZE_PARAMS::enablePTD is set to 1. */
    uint32_t colourPlaneId; /**< [in]: Specifies the colour plane ID associated with the current
                               input. */
    uint32_t
        forceIntraRefreshWithFrameCnt; /**< [in]: Forces an intra refresh with duration equal to
                                          intraRefreshFrameCnt. When outputRecoveryPointSEI is set
                                          this is value is used for recovery_frame_cnt in recovery
                                          point SEI message forceIntraRefreshWithFrameCnt cannot be
                                          used if B frames are used in the GOP structure specified
                                        */
    uint32_t constrainedFrame : 1; /**< [in]: Set to 1 if client wants to encode this frame with
                                      each slice completely independent of other slices in the
                                      frame. NV_ENC_INITIALIZE_PARAMS::enableConstrainedEncoding
                                      should be set to 1 */
    uint32_t sliceModeDataUpdate : 1; /**< [in]: Set to 1 if client wants to change the
                                         sliceModeData field to specify new sliceSize Parameter When
                                         forceIntraRefreshWithFrameCnt is set it will have priority
                                         over sliceMode setting */
    uint32_t ltrMarkFrame : 1; /**< [in]: Set to 1 if client wants to mark this frame as LTR */
    uint32_t ltrUseFrames : 1; /**< [in]: Set to 1 if client allows encoding this frame using the
                                  LTR frames specified in ltrFrameBitmap */
    uint32_t reservedBitFields : 28; /**< [in]: Reserved bit fields and must be set to 0 */
    uint8_t* sliceTypeData; /**< [in]: Deprecated. */
    uint32_t sliceTypeArrayCnt; /**< [in]: Deprecated. */
    uint32_t seiPayloadArrayCnt; /**< [in]: Specifies the number of elements allocated in
                                    seiPayloadArray array. */
    NV_ENC_SEI_PAYLOAD*
        seiPayloadArray; /**< [in]: Array of SEI payloads which will be inserted for this frame. */
    uint32_t
        sliceMode; /**< [in]: This parameter in conjunction with sliceModeData specifies the way in
                      which the picture is divided into slices sliceMode = 0 MB based slices,
                      sliceMode = 1 Byte based slices, sliceMode = 2 MB row based slices, sliceMode
                      = 3, numSlices in Picture When forceIntraRefreshWithFrameCnt is set it will
                      have priority over sliceMode setting When sliceMode == 0 and sliceModeData ==
                      0 whole picture will be coded with one slice */
    uint32_t sliceModeData; /**< [in]: Specifies the parameter needed for sliceMode. For:
                                       sliceMode = 0, sliceModeData specifies # of MBs in each slice
                               (except last slice) sliceMode = 1, sliceModeData specifies maximum #
                               of bytes in each slice (except last slice) sliceMode = 2,
                               sliceModeData specifies # of MB rows in each slice (except last
                               slice) sliceMode = 3, sliceModeData specifies number of slices in the
                               picture. Driver will divide picture into slices optimally */
    uint32_t ltrMarkFrameIdx; /**< [in]: Specifies the long term referenceframe index to use for
                                 marking this frame as LTR.*/
    uint32_t ltrUseFrameBitmap; /**< [in]: Specifies the associated bitmap of LTR frame indices to
                                   use when encoding this frame. */
    uint32_t
        ltrUsageMode; /**< [in]: Not supported. Reserved for future use and must be set to 0. */
    uint32_t
        forceIntraSliceCount; /**< [in]: Specifies the number of slices to be forced to Intra in the
                                 current picture. This option along with forceIntraSliceIdx[] array
                                 needs to be used with sliceMode = 3 only */
    uint32_t* forceIntraSliceIdx; /**< [in]: Slice indices to be forced to intra in the current
                                     picture. Each slice index should be <= num_slices_in_picture
                                     -1. Index starts from 0 for first slice. The number of entries
                                     in this array should be equal to forceIntraSliceCount */
    NV_ENC_PIC_PARAMS_H264_EXT h264ExtPicParams; /**< [in]: Specifies the H264 extension config
                                                    parameters using this config. */
    NV_ENC_TIME_CODE
        timeCode; /**< [in]: Specifies the clock timestamp sets used in picture timing SEI.
                     Applicable only when NV_ENC_CONFIG_H264::enableTimeCode is set to 1. */
    uint32_t reserved[203]; /**< [in]: Reserved and must be set to 0. */
    void* reserved2[61]; /**< [in]: Reserved and must be set to NULL. */
} NV_ENC_PIC_PARAMS_H264;

/**
 * \struct _NV_ENC_PIC_PARAMS_HEVC
 * HEVC specific enc pic params. sent on a per frame basis.
 */
typedef struct _NV_ENC_PIC_PARAMS_HEVC {
    uint32_t displayPOCSyntax; /**< [in]: Specifies the display POC syntax This is required to be
                                  set if client is handling the picture type decision. */
    uint32_t refPicFlag; /**< [in]: Set to 1 for a reference picture. This is ignored if
                            NV_ENC_INITIALIZE_PARAMS::enablePTD is set to 1. */
    uint32_t temporalId; /**< [in]: Specifies the temporal id of the picture */
    uint32_t
        forceIntraRefreshWithFrameCnt; /**< [in]: Forces an intra refresh with duration equal to
                                          intraRefreshFrameCnt. When outputRecoveryPointSEI is set
                                          this is value is used for recovery_frame_cnt in recovery
                                          point SEI message forceIntraRefreshWithFrameCnt cannot be
                                          used if B frames are used in the GOP structure specified
                                        */
    uint32_t constrainedFrame : 1; /**< [in]: Set to 1 if client wants to encode this frame with
                                      each slice completely independent of other slices in the
                                      frame. NV_ENC_INITIALIZE_PARAMS::enableConstrainedEncoding
                                      should be set to 1 */
    uint32_t sliceModeDataUpdate : 1; /**< [in]: Set to 1 if client wants to change the
                                         sliceModeData field to specify new sliceSize Parameter When
                                         forceIntraRefreshWithFrameCnt is set it will have priority
                                         over sliceMode setting */
    uint32_t ltrMarkFrame : 1; /**< [in]: Set to 1 if client wants to mark this frame as LTR */
    uint32_t ltrUseFrames : 1; /**< [in]: Set to 1 if client allows encoding this frame using the
                                  LTR frames specified in ltrFrameBitmap */
    uint32_t reservedBitFields : 28; /**< [in]: Reserved bit fields and must be set to 0 */
    uint8_t* sliceTypeData; /**< [in]: Array which specifies the slice type used to force intra
                               slice for a particular slice. Currently supported only for
                               NV_ENC_CONFIG_H264::sliceMode == 3. Client should allocate array of
                               size sliceModeData where sliceModeData is specified in field of
                               ::_NV_ENC_CONFIG_H264 Array element with index n corresponds to nth
                               slice. To force a particular slice to intra client should set
                               corresponding array element to NV_ENC_SLICE_TYPE_I all other array
                               elements should be set to NV_ENC_SLICE_TYPE_DEFAULT */
    uint32_t sliceTypeArrayCnt; /**< [in]: Client should set this to the number of elements
                                   allocated in sliceTypeData array. If sliceTypeData is NULL then
                                   this should be set to 0 */
    uint32_t
        sliceMode; /**< [in]: This parameter in conjunction with sliceModeData specifies the way in
                      which the picture is divided into slices sliceMode = 0 CTU based slices,
                      sliceMode = 1 Byte based slices, sliceMode = 2 CTU row based slices, sliceMode
                      = 3, numSlices in Picture When forceIntraRefreshWithFrameCnt is set it will
                      have priority over sliceMode setting When sliceMode == 0 and sliceModeData ==
                      0 whole picture will be coded with one slice */
    uint32_t sliceModeData; /**< [in]: Specifies the parameter needed for sliceMode. For:
                                       sliceMode = 0, sliceModeData specifies # of CTUs in each
                               slice (except last slice) sliceMode = 1, sliceModeData specifies
                               maximum # of bytes in each slice (except last slice) sliceMode = 2,
                               sliceModeData specifies # of CTU rows in each slice (except last
                               slice) sliceMode = 3, sliceModeData specifies number of slices in the
                               picture. Driver will divide picture into slices optimally */
    uint32_t ltrMarkFrameIdx; /**< [in]: Specifies the long term reference frame index to use for
                                 marking this frame as LTR.*/
    uint32_t ltrUseFrameBitmap; /**< [in]: Specifies the associated bitmap of LTR frame indices to
                                   use when encoding this frame. */
    uint32_t
        ltrUsageMode; /**< [in]: Not supported. Reserved for future use and must be set to 0. */
    uint32_t seiPayloadArrayCnt; /**< [in]: Specifies the number of elements allocated in
                                    seiPayloadArray array. */
    uint32_t reserved; /**< [in]: Reserved and must be set to 0. */
    NV_ENC_SEI_PAYLOAD*
        seiPayloadArray; /**< [in]: Array of SEI payloads which will be inserted for this frame. */
    NV_ENC_TIME_CODE
        timeCode; /**< [in]: Specifies the clock timestamp sets used in time code SEI. Applicable
                     only when NV_ENC_CONFIG_HEVC::enableTimeCodeSEI is set to 1. */
    uint32_t reserved2[237]; /**< [in]: Reserved and must be set to 0. */
    void* reserved3[61]; /**< [in]: Reserved and must be set to NULL. */
} NV_ENC_PIC_PARAMS_HEVC;

#define NV_ENC_AV1_OBU_PAYLOAD NV_ENC_SEI_PAYLOAD

/**
 * \struct _NV_ENC_PIC_PARAMS_AV1
 * AV1 specific enc pic params. sent on a per frame basis.
 */
typedef struct _NV_ENC_PIC_PARAMS_AV1 {
    uint32_t displayPOCSyntax; /**< [in]: Specifies the display POC syntax This is required to be
                                  set if client is handling the picture type decision. */
    uint32_t refPicFlag; /**< [in]: Set to 1 for a reference picture. This is ignored if
                            NV_ENC_INITIALIZE_PARAMS::enablePTD is set to 1. */
    uint32_t temporalId; /**< [in]: Specifies the temporal id of the picture */
    uint32_t
        forceIntraRefreshWithFrameCnt; /**< [in]: Forces an intra refresh with duration equal to
                                          intraRefreshFrameCnt. forceIntraRefreshWithFrameCnt cannot
                                          be used if B frames are used in the GOP structure
                                          specified */
    uint32_t goldenFrameFlag : 1; /**< [in]: Encode frame as Golden Frame. This is ignored if
                                     NV_ENC_INITIALIZE_PARAMS::enablePTD is set to 1. */
    uint32_t arfFrameFlag : 1; /**< [in]: Encode frame as Alternate Reference Frame. This is ignored
                                  if NV_ENC_INITIALIZE_PARAMS::enablePTD is set to 1. */
    uint32_t arf2FrameFlag : 1; /**< [in]: Encode frame as Alternate Reference 2 Frame. This is
                                   ignored if NV_ENC_INITIALIZE_PARAMS::enablePTD is set to 1. */
    uint32_t bwdFrameFlag : 1; /**< [in]: Encode frame as Backward Reference Frame. This is ignored
                                  if NV_ENC_INITIALIZE_PARAMS::enablePTD is set to 1. */
    uint32_t overlayFrameFlag : 1; /**< [in]: Encode frame as overlay frame. A previously encoded
                                      frame with the same displayPOCSyntax value should be present
                                      in reference frame buffer. This is ignored if
                                      NV_ENC_INITIALIZE_PARAMS::enablePTD is set to 1. */
    uint32_t
        showExistingFrameFlag : 1; /**< [in]: When ovelayFrameFlag is set to 1, this flag controls
                                      the value of the show_existing_frame syntax element associated
                                      with the overlay frame. This flag is added to the interface as
                                      a placeholder. Its value is ignored for now and always assumed
                                      to be set to 1. This is ignored if
                                      NV_ENC_INITIALIZE_PARAMS::enablePTD is set to 1. */
    uint32_t errorResilientModeFlag : 1; /**< [in]: encode frame independently from previously
                                            encoded frames */

    uint32_t tileConfigUpdate : 1; /**< [in]: Set to 1 if client wants to overwrite the default tile
                                      configuration with the tile parameters specified below When
                                      forceIntraRefreshWithFrameCnt is set it will have priority
                                      over tileConfigUpdate setting */
    uint32_t
        enableCustomTileConfig : 1; /**< [in]: Set 1 to enable custom tile configuration:
                                       numTileColumns and numTileRows must have non zero values and
                                       tileWidths and tileHeights must point to a valid address  */
    uint32_t
        filmGrainParamsUpdate : 1; /**< [in]: Set to 1 if client wants to update previous film grain
                                      parameters: filmGrainParams must point to a valid address and
                                      encoder must have been configured with film grain enabled  */
    uint32_t reservedBitFields : 22; /**< [in]: Reserved bitfields and must be set to 0 */
    uint32_t
        numTileColumns; /**< [in]: This parameter in conjunction with the flag
                           enableCustomTileConfig and the array tileWidths[] specifies the way in
                           which the picture is divided into tile columns. When
                           enableCustomTileConfig == 0, the picture will be uniformly divided into
                           numTileColumns tile columns. If numTileColumns is not a power of 2, it
                           will be rounded down to the next power of 2 value. If numTileColumns ==
                           0, the picture will be coded with the smallest number of vertical tiles
                           as allowed by standard. When enableCustomTileConfig == 1, numTileColumns
                           must be > 0 and <= NV_MAX_TILE_COLS_AV1 and tileWidths must point to a
                           valid array of numTileColumns entries. Entry i specifies the width in
                           64x64 CTU unit of tile colum i. The sum of all the entries should be
                           equal to the picture width in 64x64 CTU units. */
    uint32_t
        numTileRows; /**< [in]: This parameter in conjunction with the flag enableCustomTileConfig
                        and the array tileHeights[] specifies the way in which the picture is
                        divided into tiles rows When enableCustomTileConfig == 0, the picture will
                        be uniformly divided into numTileRows tile rows. If numTileRows is not a
                        power of 2, it will be rounded down to the next power of 2 value. If
                        numTileRows == 0, the picture will be coded with the smallest number of
                        horizontal tiles as allowed by standard. When enableCustomTileConfig == 1,
                        numTileRows must be > 0 and <= NV_MAX_TILE_ROWS_AV1 and tileHeights must
                        point to a valid array of numTileRows entries. Entry i specifies the height
                        in 64x64 CTU unit of tile row i. The sum of all the entries should be equal
                        to the picture hieght in 64x64 CTU units. */
    uint32_t*
        tileWidths; /**< [in]: If enableCustomTileConfig == 1, tileWidths[i] specifies the width of
                       tile column i in 64x64 CTU unit, with 0 <= i <= numTileColumns -1. */
    uint32_t*
        tileHeights; /**< [in]: If enableCustomTileConfig == 1, tileHeights[i] specifies the height
                        of tile row i in 64x64 CTU unit, with 0 <= i <= numTileRows -1. */
    uint32_t obuPayloadArrayCnt; /**< [in]: Specifies the number of elements allocated in
                                    obuPayloadArray array. */
    uint32_t reserved; /**< [in]: Reserved and must be set to 0. */
    NV_ENC_AV1_OBU_PAYLOAD*
        obuPayloadArray; /**< [in]: Array of OBU payloads which will be inserted for this frame. */
    NV_ENC_FILM_GRAIN_PARAMS_AV1*
        filmGrainParams; /**< [in]: If filmGrainParamsUpdate == 1, filmGrainParams must point to a
                            valid NV_ENC_FILM_GRAIN_PARAMS_AV1 structure */
    uint32_t reserved2[247]; /**< [in]: Reserved and must be set to 0. */
    void* reserved3[61]; /**< [in]: Reserved and must be set to NULL. */
} NV_ENC_PIC_PARAMS_AV1;

/**
 * Codec specific per-picture encoding parameters.
 */
typedef union _NV_ENC_CODEC_PIC_PARAMS {
    NV_ENC_PIC_PARAMS_H264 h264PicParams; /**< [in]: H264 encode picture params. */
    NV_ENC_PIC_PARAMS_HEVC hevcPicParams; /**< [in]: HEVC encode picture params. */
    NV_ENC_PIC_PARAMS_AV1 av1PicParams; /**< [in]: AV1 encode picture params. */
    uint32_t reserved[256]; /**< [in]: Reserved and must be set to 0. */
} NV_ENC_CODEC_PIC_PARAMS;

/**
 * \struct _NV_ENC_PIC_PARAMS
 * Encoding parameters that need to be sent on a per frame basis.
 */
typedef struct _NV_ENC_PIC_PARAMS {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_PIC_PARAMS_VER. */
    uint32_t inputWidth; /**< [in]: Specifies the input frame width */
    uint32_t inputHeight; /**< [in]: Specifies the input frame height */
    uint32_t inputPitch; /**< [in]: Specifies the input buffer pitch. If pitch value is not known,
                            set this to inputWidth. */
    uint32_t encodePicFlags; /**< [in]: Specifies bit-wise OR of encode picture flags. See
                                ::NV_ENC_PIC_FLAGS enum. */
    uint32_t frameIdx; /**< [in]: Specifies the frame index associated with the input frame
                          [optional]. */
    uint64_t
        inputTimeStamp; /**< [in]: Specifies opaque data which is associated with the encoded frame,
                           but not actually encoded in the output bitstream. This opaque data can be
                           used later to uniquely refer to the corresponding encoded frame. For
                           example, it can be used for identifying the frame to be invalidated in
                           the reference picture buffer, if lost at the client. */
    uint64_t inputDuration; /**< [in]: Specifies duration of the input picture */
    NV_ENC_INPUT_PTR inputBuffer; /**< [in]: Specifies the input buffer pointer. Client must use a
                                     pointer obtained from ::NvEncCreateInputBuffer() or
                                     ::NvEncMapInputResource() APIs.*/
    NV_ENC_OUTPUT_PTR
        outputBitstream; /**< [in]: Specifies the output buffer pointer.
                                    If NV_ENC_INITIALIZE_PARAMS::enableOutputInVidmem is set to 0,
                            specifies the pointer to output buffer. Client should use a pointer
                            obtained from ::NvEncCreateBitstreamBuffer() API. If
                            NV_ENC_INITIALIZE_PARAMS::enableOutputInVidmem is set to 1, client
                            should allocate buffer in video memory for NV_ENC_ENCODE_OUT_PARAMS
                            struct and encoded bitstream data. Client should use a pointer obtained
                            from ::NvEncMapInputResource() API, when mapping this output buffer and
                            assign it to NV_ENC_PIC_PARAMS::outputBitstream. First 256 bytes of this
                            buffer should be interpreted as NV_ENC_ENCODE_OUT_PARAMS struct followed
                            by encoded bitstream data. Recommended size for output buffer is sum of
                            size of NV_ENC_ENCODE_OUT_PARAMS struct and twice the input frame size
                            for lower resolution eg. CIF and 1.5 times the input frame size for
                            higher resolutions. If encoded bitstream size is greater than the
                            allocated buffer size for encoded bitstream, then the output buffer will
                            have encoded bitstream data equal to buffer size. All CUDA operations on
                            this buffer must use the default stream. */
    void* completionEvent; /**< [in]: Specifies an event to be signaled on completion of encoding of
                              this Frame [only if operating in Asynchronous mode]. Each output
                              buffer should be associated with a distinct event pointer. */
    NV_ENC_BUFFER_FORMAT bufferFmt; /**< [in]: Specifies the input buffer format. */
    NV_ENC_PIC_STRUCT pictureStruct; /**< [in]: Specifies structure of the input picture. */
    NV_ENC_PIC_TYPE
        pictureType; /**< [in]: Specifies input picture type. Client required to be set explicitly
                        by the client if the client has not set NV_ENC_INITALIZE_PARAMS::enablePTD
                        to 1 while calling NvInitializeEncoder. */
    NV_ENC_CODEC_PIC_PARAMS
        codecPicParams; /**< [in]: Specifies the codec specific per-picture encoding parameters. */
    NVENC_EXTERNAL_ME_HINT_COUNTS_PER_BLOCKTYPE
        meHintCountsPerBlock[2]; /**< [in]: For H264 and Hevc, specifies the number of hint
                                    candidates per block per direction for the current frame.
                                    meHintCountsPerBlock[0] is for L0 predictors and
                                    meHintCountsPerBlock[1] is for L1 predictors. The candidate
                                    count in NV_ENC_PIC_PARAMS::meHintCountsPerBlock[lx] must never
                                    exceed NV_ENC_INITIALIZE_PARAMS::maxMEHintCountsPerBlock[lx]
                                    provided during encoder initialization. */
    NVENC_EXTERNAL_ME_HINT*
        meExternalHints; /**< [in]: For H264 and Hevc, Specifies the pointer to ME external hints
                            for the current frame. The size of ME hint buffer should be equal to
                            number of macroblocks * the total number of candidates per macroblock.
                                    The total number of candidates per MB per direction =
                            1*meHintCountsPerBlock[Lx].numCandsPerBlk16x16 +
                            2*meHintCountsPerBlock[Lx].numCandsPerBlk16x8 +
                            2*meHintCountsPerBlock[Lx].numCandsPerBlk8x8
                                    + 4*meHintCountsPerBlock[Lx].numCandsPerBlk8x8. For frames using
                            bidirectional ME , the total number of candidates for single macroblock
                            is sum of total number of candidates per MB for each direction (L0 and
                            L1) */
    uint32_t reserved1[6]; /**< [in]: Reserved and must be set to 0 */
    void* reserved2[2]; /**< [in]: Reserved and must be set to NULL */
    int8_t* qpDeltaMap; /**< [in]: Specifies the pointer to signed byte array containing value per
                           MB for H264, per CTB for HEVC and per SB for AV1 in raster scan order for
                           the current picture, which will be interpreted depending on
                           NV_ENC_RC_PARAMS::qpMapMode. If NV_ENC_RC_PARAMS::qpMapMode is
                           NV_ENC_QP_MAP_DELTA, qpDeltaMap specifies QP modifier per MB for H264,
                           per CTB for HEVC and per SB for AV1. This QP modifier will be applied on
                           top of the QP chosen by rate control. If NV_ENC_RC_PARAMS::qpMapMode is
                           NV_ENC_QP_MAP_EMPHASIS, qpDeltaMap specifies Emphasis Level Map per MB
                           for H264. This level value along with QP chosen by rate control is used
                           to compute the QP modifier, which in turn is applied on top of QP chosen
                           by rate control. If NV_ENC_RC_PARAMS::qpMapMode is
                           NV_ENC_QP_MAP_DISABLED, value in qpDeltaMap will be ignored.*/
    uint32_t
        qpDeltaMapSize; /**< [in]: Specifies the size in bytes of qpDeltaMap surface allocated by
                           client and pointed to by NV_ENC_PIC_PARAMS::qpDeltaMap. Surface (array)
                           should be picWidthInMbs * picHeightInMbs for H264, picWidthInCtbs *
                           picHeightInCtbs for HEVC and picWidthInSbs * picHeightInSbs for AV1 */
    uint32_t reservedBitFields; /**< [in]: Reserved bitfields and must be set to 0 */
    uint16_t meHintRefPicDist[2]; /**< [in]: Specifies temporal distance for reference picture
                                     (NVENC_EXTERNAL_ME_HINT::refidx = 0) used during external ME
                                     with NV_ENC_INITALIZE_PARAMS::enablePTD = 1 .
                                     meHintRefPicDist[0] is for L0 hints and meHintRefPicDist[1] is
                                     for L1 hints. If not set, will internally infer distance of 1.
                                     Ignored for NV_ENC_INITALIZE_PARAMS::enablePTD = 0 */
    NV_ENC_INPUT_PTR
        alphaBuffer; /**< [in]: Specifies the input alpha buffer pointer. Client must use a pointer
                        obtained from ::NvEncCreateInputBuffer() or ::NvEncMapInputResource() APIs.
                                Applicable only when encoding hevc with alpha layer is enabled. */
    NVENC_EXTERNAL_ME_SB_HINT*
        meExternalSbHints; /**< [in]: For AV1,Specifies the pointer to ME external SB hints for the
                              current frame. The size of ME hint buffer should be equal to
                              meSbHintsCount. */
    uint32_t
        meSbHintsCount; /**< [in]: For AV1, specifies the total number of external ME SB hint
                           candidates for the frame NV_ENC_PIC_PARAMS::meSbHintsCount must never
                           exceed the total number of SBs in frame * the max number of candidates
                           per SB provided during encoder initialization. The max number of
                           candidates per SB is maxMeHintCountsPerBlock[0].numCandsPerSb +
                           maxMeHintCountsPerBlock[1].numCandsPerSb */
    uint32_t reserved3[285]; /**< [in]: Reserved and must be set to 0 */
    void* reserved4[58]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_PIC_PARAMS;

/** Macro for constructing the version field of ::_NV_ENC_PIC_PARAMS */
#define NV_ENC_PIC_PARAMS_VER (NVENCAPI_STRUCT_VERSION(6) | (1 << 31))

/**
 * \struct _NV_ENC_MEONLY_PARAMS
 * MEOnly parameters that need to be sent on a per motion estimation basis.
 * NV_ENC_MEONLY_PARAMS::meExternalHints is supported for H264 only.
 */
typedef struct _NV_ENC_MEONLY_PARAMS {
    uint32_t version; /**< [in]: Struct version. Must be set to NV_ENC_MEONLY_PARAMS_VER.*/
    uint32_t inputWidth; /**< [in]: Specifies the input frame width */
    uint32_t inputHeight; /**< [in]: Specifies the input frame height */
    NV_ENC_INPUT_PTR
        inputBuffer; /**< [in]: Specifies the input buffer pointer. Client must use a pointer
                        obtained from NvEncCreateInputBuffer() or NvEncMapInputResource() APIs. */
    NV_ENC_INPUT_PTR referenceFrame; /**< [in]: Specifies the reference frame pointer */
    NV_ENC_OUTPUT_PTR
        mvBuffer; /**< [in]: Specifies the output buffer pointer.
                             If NV_ENC_INITIALIZE_PARAMS::enableOutputInVidmem is set to 0,
                     specifies the pointer to motion vector data buffer allocated by
                     NvEncCreateMVBuffer. Client must lock mvBuffer using ::NvEncLockBitstream() API
                     to get the motion vector data. If
                     NV_ENC_INITIALIZE_PARAMS::enableOutputInVidmem is set to 1, client should
                     allocate buffer in video memory for storing the motion vector data. The size of
                     this buffer must be equal to total number of macroblocks multiplied by size of
                     NV_ENC_H264_MV_DATA struct. Client should use a pointer obtained from
                     ::NvEncMapInputResource() API, when mapping this output buffer and assign it to
                     NV_ENC_MEONLY_PARAMS::mvBuffer. All CUDA operations on this buffer must use the
                     default stream. */
    NV_ENC_BUFFER_FORMAT bufferFmt; /**< [in]: Specifies the input buffer format. */
    void* completionEvent; /**< [in]: Specifies an event to be signaled on completion of motion
                              estimation of this Frame [only if operating in Asynchronous mode].
                                      Each output buffer should be associated with a distinct event
                              pointer. */
    uint32_t viewID; /**< [in]: Specifies left or right viewID if
                        NV_ENC_CONFIG_H264_MEONLY::bStereoEnable is set. viewID can be 0,1 if
                        bStereoEnable is set, 0 otherwise. */
    NVENC_EXTERNAL_ME_HINT_COUNTS_PER_BLOCKTYPE
    meHintCountsPerBlock[2]; /**< [in]: Specifies the number of hint candidates per block for the
                                current frame. meHintCountsPerBlock[0] is for L0 predictors. The
                                candidate count in NV_ENC_PIC_PARAMS::meHintCountsPerBlock[lx] must
                                never exceed NV_ENC_INITIALIZE_PARAMS::maxMEHintCountsPerBlock[lx]
                                provided during encoder initialization. */
    NVENC_EXTERNAL_ME_HINT*
        meExternalHints; /**< [in]: Specifies the pointer to ME external hints for the current
                            frame. The size of ME hint buffer should be equal to number of
                            macroblocks * the total number of candidates per macroblock. The total
                            number of candidates per MB per direction =
                            1*meHintCountsPerBlock[Lx].numCandsPerBlk16x16 +
                            2*meHintCountsPerBlock[Lx].numCandsPerBlk16x8 +
                            2*meHintCountsPerBlock[Lx].numCandsPerBlk8x8
                                     + 4*meHintCountsPerBlock[Lx].numCandsPerBlk8x8. For frames
                            using bidirectional ME , the total number of candidates for single
                            macroblock is sum of total number of candidates per MB for each
                            direction (L0 and L1) */
    uint32_t reserved1[243]; /**< [in]: Reserved and must be set to 0 */
    void* reserved2[59]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_MEONLY_PARAMS;

/** NV_ENC_MEONLY_PARAMS struct version*/
#define NV_ENC_MEONLY_PARAMS_VER NVENCAPI_STRUCT_VERSION(3)

/**
 * \struct _NV_ENC_LOCK_BITSTREAM
 * Bitstream buffer lock parameters.
 */
typedef struct _NV_ENC_LOCK_BITSTREAM {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_LOCK_BITSTREAM_VER. */
    uint32_t doNotWait : 1; /**< [in]: If this flag is set, the NvEncodeAPI interface will return
                               buffer pointer even if operation is not completed. If not set, the
                               call will block until operation completes. */
    uint32_t ltrFrame : 1; /**< [out]: Flag indicating this frame is marked as LTR frame */
    uint32_t getRCStats : 1; /**< [in]: If this flag is set then lockBitstream call will add
                                additional intra-inter MB count and average MVX, MVY */
    uint32_t reservedBitFields : 29; /**< [in]: Reserved bit fields and must be set to 0 */
    void* outputBitstream; /**< [in]: Pointer to the bitstream buffer being locked. */
    uint32_t* sliceOffsets; /**< [in, out]: Array which receives the slice (H264/HEVC) or tile (AV1)
                               offsets. This is not supported if NV_ENC_CONFIG_H264::sliceMode is 1
                               on Kepler GPUs. Array size must be equal to size of frame in MBs. */
    uint32_t frameIdx; /**< [out]: Frame no. for which the bitstream is being retrieved. */
    uint32_t hwEncodeStatus; /**< [out]: The NvEncodeAPI interface status for the locked picture. */
    uint32_t numSlices; /**< [out]: Number of slices (H264/HEVC) or tiles (AV1) in the encoded
                           picture. Will be reported only if
                           NV_ENC_INITIALIZE_PARAMS::reportSliceOffsets set to 1. */
    uint32_t
        bitstreamSizeInBytes; /**< [out]: Actual number of bytes generated and copied to the memory
                                 pointed by bitstreamBufferPtr. When HEVC alpha layer encoding is
                                 enabled, this field reports the total encoded size in bytes i.e it
                                 is the encoded size of the base plus the alpha layer. For AV1 when
                                 enablePTD is set, this field reports the total encoded size in
                                 bytes of all the encoded frames packed into the current output
                                 surface i.e. show frame plus all preceding no-show frames */
    uint64_t
        outputTimeStamp; /**< [out]: Presentation timestamp associated with the encoded output. */
    uint64_t
        outputDuration; /**< [out]: Presentation duration associates with the encoded output. */
    void* bitstreamBufferPtr; /**< [out]: Pointer to the generated output bitstream.
                                          For MEOnly mode _NV_ENC_LOCK_BITSTREAM::bitstreamBufferPtr
                                 should be typecast to NV_ENC_H264_MV_DATA/NV_ENC_HEVC_MV_DATA
                                 pointer respectively for H264/HEVC  */
    NV_ENC_PIC_TYPE pictureType; /**< [out]: Picture type of the encoded picture. */
    NV_ENC_PIC_STRUCT pictureStruct; /**< [out]: Structure of the generated output picture. */
    uint32_t frameAvgQP; /**< [out]: Average QP of the frame. */
    uint32_t frameSatd; /**< [out]: Total SATD cost for whole frame. */
    uint32_t ltrFrameIdx; /**< [out]: Frame index associated with this LTR frame. */
    uint32_t ltrFrameBitmap; /**< [out]: Bitmap of LTR frames indices which were used for encoding
                                this frame. Value of 0 if no LTR frames were used. */
    uint32_t
        temporalId; /**< [out]: TemporalId value of the frame when using temporalSVC encoding */
    uint32_t reserved[12]; /**< [in]: Reserved and must be set to 0 */
    uint32_t intraMBCount; /**< [out]: For H264, Number of Intra MBs in the encoded frame. For HEVC,
                              Number of Intra CTBs in the encoded frame. For AV1, Number of Intra
                              SBs in the encoded show frame. Supported only if
                              _NV_ENC_LOCK_BITSTREAM::getRCStats set to 1. */
    uint32_t interMBCount; /**< [out]: For H264, Number of Inter MBs in the encoded frame, includes
                              skip MBs. For HEVC, Number of Inter CTBs in the encoded frame. For
                              AV1, Number of Inter SBs in the encoded show frame. Supported only if
                              _NV_ENC_LOCK_BITSTREAM::getRCStats set to 1. */
    int32_t averageMVX; /**< [out]: Average Motion Vector in X direction for the encoded frame.
                           Supported only if _NV_ENC_LOCK_BITSTREAM::getRCStats set to 1. */
    int32_t averageMVY; /**< [out]: Average Motion Vector in y direction for the encoded frame.
                           Supported only if _NV_ENC_LOCK_BITSTREAM::getRCStats set to 1. */
    uint32_t alphaLayerSizeInBytes; /**< [out]: Number of bytes generated for the alpha layer in the
                                       encoded output. Applicable only when HEVC with alpha encoding
                                       is enabled. */

    uint32_t reserved1[218]; /**< [in]: Reserved and must be set to 0 */
    void* reserved2[64]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_LOCK_BITSTREAM;

/** Macro for constructing the version field of ::_NV_ENC_LOCK_BITSTREAM */
#define NV_ENC_LOCK_BITSTREAM_VER NVENCAPI_STRUCT_VERSION(2)

/**
 * \struct _NV_ENC_LOCK_INPUT_BUFFER
 * Uncompressed Input Buffer lock parameters.
 */
typedef struct _NV_ENC_LOCK_INPUT_BUFFER {
    uint32_t version; /**< [in]:  Struct version. Must be set to ::NV_ENC_LOCK_INPUT_BUFFER_VER. */
    uint32_t doNotWait : 1; /**< [in]:  Set to 1 to make ::NvEncLockInputBuffer() a unblocking call.
                               If the encoding is not completed, driver will return
                               ::NV_ENC_ERR_ENCODER_BUSY error code. */
    uint32_t reservedBitFields : 31; /**< [in]:  Reserved bitfields and must be set to 0 */
    NV_ENC_INPUT_PTR inputBuffer; /**< [in]:  Pointer to the input buffer to be locked, client
                                     should pass the pointer obtained from
                                     ::NvEncCreateInputBuffer() or ::NvEncMapInputResource API. */
    void* bufferDataPtr; /**< [out]: Pointed to the locked input buffer data. Client can only access
                            input buffer using the \p bufferDataPtr. */
    uint32_t pitch; /**< [out]: Pitch of the locked input buffer. */
    uint32_t reserved1[251]; /**< [in]:  Reserved and must be set to 0  */
    void* reserved2[64]; /**< [in]:  Reserved and must be set to NULL  */
} NV_ENC_LOCK_INPUT_BUFFER;

/** Macro for constructing the version field of ::_NV_ENC_LOCK_INPUT_BUFFER */
#define NV_ENC_LOCK_INPUT_BUFFER_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * \struct _NV_ENC_MAP_INPUT_RESOURCE
 * Map an input resource to a Nvidia Encoder Input Buffer
 */
typedef struct _NV_ENC_MAP_INPUT_RESOURCE {
    uint32_t version; /**< [in]:  Struct version. Must be set to ::NV_ENC_MAP_INPUT_RESOURCE_VER. */
    uint32_t subResourceIndex; /**< [in]:  Deprecated. Do not use. */
    void* inputResource; /**< [in]:  Deprecated. Do not use. */
    NV_ENC_REGISTERED_PTR registeredResource; /**< [in]:  The Registered resource handle obtained by
                                                 calling NvEncRegisterInputResource. */
    NV_ENC_INPUT_PTR
        mappedResource; /**< [out]: Mapped pointer corresponding to the registeredResource. This
                           pointer must be used in NV_ENC_PIC_PARAMS::inputBuffer parameter in
                           ::NvEncEncodePicture() API. */
    NV_ENC_BUFFER_FORMAT
        mappedBufferFmt; /**< [out]: Buffer format of the outputResource. This buffer format must be
                            used in NV_ENC_PIC_PARAMS::bufferFmt if client using the above mapped
                            resource pointer. */
    uint32_t reserved1[251]; /**< [in]:  Reserved and must be set to 0. */
    void* reserved2[63]; /**< [in]:  Reserved and must be set to NULL */
} NV_ENC_MAP_INPUT_RESOURCE;

/** Macro for constructing the version field of ::_NV_ENC_MAP_INPUT_RESOURCE */
#define NV_ENC_MAP_INPUT_RESOURCE_VER NVENCAPI_STRUCT_VERSION(4)

/**
 * \struct _NV_ENC_INPUT_RESOURCE_OPENGL_TEX
 * NV_ENC_REGISTER_RESOURCE::resourceToRegister must be a pointer to a variable of this type,
 * when NV_ENC_REGISTER_RESOURCE::resourceType is NV_ENC_INPUT_RESOURCE_TYPE_OPENGL_TEX
 */
typedef struct _NV_ENC_INPUT_RESOURCE_OPENGL_TEX {
    uint32_t texture; /**< [in]: The name of the texture to be used. */
    uint32_t target; /**< [in]: Accepted values are GL_TEXTURE_RECTANGLE and GL_TEXTURE_2D. */
} NV_ENC_INPUT_RESOURCE_OPENGL_TEX;

/** \struct NV_ENC_FENCE_POINT_D3D12
 * Fence and fence value for synchronization.
 */
typedef struct _NV_ENC_FENCE_POINT_D3D12 {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_FENCE_POINT_D3D12_VER. */
    uint32_t reserved; /**< [in]: Reserved and must be set to 0. */
    void*
        pFence; /**< [in]: Pointer to ID3D12Fence. This fence object is used for synchronization. */
    uint64_t waitValue; /**< [in]: Fence value to reach or exceed before the GPU operation. */
    uint64_t signalValue; /**< [in]: Fence value to set the fence to, after the GPU operation. */
    uint32_t bWait : 1; /**< [in]: Wait on 'waitValue' if bWait is set to 1, before starting GPU
                           operation. */
    uint32_t bSignal : 1; /**< [in]: Signal on 'signalValue' if bSignal is set to 1, after GPU
                             operation is complete. */
    uint32_t reservedBitField : 30; /**< [in]: Reserved and must be set to 0. */
    uint32_t reserved1[7]; /**< [in]: Reserved and must be set to 0. */
} NV_ENC_FENCE_POINT_D3D12;

#define NV_ENC_FENCE_POINT_D3D12_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * \struct _NV_ENC_INPUT_RESOURCE_D3D12
 * NV_ENC_PIC_PARAMS::inputBuffer and NV_ENC_PIC_PARAMS::alphaBuffer must be a pointer to a struct
 * of this type, when D3D12 interface is used
 */
typedef struct _NV_ENC_INPUT_RESOURCE_D3D12 {
    uint32_t
        version; /**< [in]: Struct version. Must be set to ::NV_ENC_INPUT_RESOURCE_D3D12_VER. */
    uint32_t reserved; /**< [in]: Reserved and must be set to 0. */
    NV_ENC_INPUT_PTR pInputBuffer; /**< [in]: Specifies the input surface pointer. Client must use a
                                      pointer obtained from NvEncMapInputResource() in
                                      NV_ENC_MAP_INPUT_RESOURCE::mappedResource when mapping the
                                      input surface. */
    NV_ENC_FENCE_POINT_D3D12 inputFencePoint; /**< [in]: Specifies the fence and corresponding fence
                                                 values to do GPU wait and signal. */
    uint32_t reserved1[16]; /**< [in]: Reserved and must be set to 0. */
    void* reserved2[16]; /**< [in]: Reserved and must be set to NULL. */
} NV_ENC_INPUT_RESOURCE_D3D12;

#define NV_ENC_INPUT_RESOURCE_D3D12_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * \struct _NV_ENC_OUTPUT_RESOURCE_D3D12
 * NV_ENC_PIC_PARAMS::outputBitstream and NV_ENC_LOCK_BITSTREAM::outputBitstream must be a pointer
 * to a struct of this type, when D3D12 interface is used
 */
typedef struct _NV_ENC_OUTPUT_RESOURCE_D3D12 {
    uint32_t
        version; /**< [in]: Struct version. Must be set to ::NV_ENC_OUTPUT_RESOURCE_D3D12_VER. */
    uint32_t reserved; /**< [in]: Reserved and must be set to 0. */
    NV_ENC_INPUT_PTR pOutputBuffer; /**< [in]: Specifies the output buffer pointer. Client must use
                                       a pointer obtained from NvEncMapInputResource() in
                                       NV_ENC_MAP_INPUT_RESOURCE::mappedResource when mapping output
                                       bitstream buffer */
    NV_ENC_FENCE_POINT_D3D12 outputFencePoint; /**< [in]: Specifies the fence and corresponding
                                                  fence values to do GPU wait and signal.*/
    uint32_t reserved1[16]; /**< [in]: Reserved and must be set to 0. */
    void* reserved2[16]; /**< [in]: Reserved and must be set to NULL. */
} NV_ENC_OUTPUT_RESOURCE_D3D12;

#define NV_ENC_OUTPUT_RESOURCE_D3D12_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * \struct _NV_ENC_REGISTER_RESOURCE
 * Register a resource for future use with the Nvidia Video Encoder Interface.
 */
typedef struct _NV_ENC_REGISTER_RESOURCE {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_REGISTER_RESOURCE_VER. */
    NV_ENC_INPUT_RESOURCE_TYPE resourceType; /**< [in]: Specifies the type of resource to be
                                                registered. Supported values are
                                                        ::NV_ENC_INPUT_RESOURCE_TYPE_DIRECTX,
                                                        ::NV_ENC_INPUT_RESOURCE_TYPE_CUDADEVICEPTR,
                                                        ::NV_ENC_INPUT_RESOURCE_TYPE_OPENGL_TEX */
    uint32_t width; /**< [in]: Input frame width. */
    uint32_t height; /**< [in]: Input frame height. */
    uint32_t pitch; /**< [in]: Input buffer pitch.
                               For ::NV_ENC_INPUT_RESOURCE_TYPE_DIRECTX resources, set this to 0.
                               For ::NV_ENC_INPUT_RESOURCE_TYPE_CUDADEVICEPTR resources, set this to
                                 the pitch as obtained from cuMemAllocPitch(), or to the width in
                                 bytes (if this resource was created by using cuMemAlloc()). This
                                 value must be a multiple of 4.
                               For ::NV_ENC_INPUT_RESOURCE_TYPE_CUDAARRAY resources, set this to the
                                 width of the allocation in bytes (i.e.
                                 CUDA_ARRAY3D_DESCRIPTOR::Width *
                       CUDA_ARRAY3D_DESCRIPTOR::NumChannels). For
                       ::NV_ENC_INPUT_RESOURCE_TYPE_OPENGL_TEX resources, set this to the texture
                       width multiplied by the number of components in the texture format. */
    uint32_t subResourceIndex; /**< [in]: Subresource Index of the DirectX resource to be
                                  registered. Should be set to 0 for other interfaces. */
    void* resourceToRegister; /**< [in]: Handle to the resource that is being registered. */
    NV_ENC_REGISTERED_PTR
        registeredResource; /**< [out]: Registered resource handle. This should be used in future
                               interactions with the Nvidia Video Encoder Interface. */
    NV_ENC_BUFFER_FORMAT bufferFormat; /**< [in]: Buffer format of resource to be registered. */
    NV_ENC_BUFFER_USAGE bufferUsage; /**< [in]: Usage of resource to be registered. */
    NV_ENC_FENCE_POINT_D3D12*
        pInputFencePoint; /**< [in]: Specifies the input fence and corresponding fence values to do
                             GPU wait and signal. To be used only when
                             NV_ENC_REGISTER_RESOURCE::resourceToRegister represents D3D12 surface
                             and NV_ENC_BUFFER_USAGE::bufferUsage is NV_ENC_INPUT_IMAGE. The fence
                             NV_ENC_FENCE_POINT_D3D12::pFence and
                             NV_ENC_FENCE_POINT_D3D12::waitValue will be used to do GPU wait before
                             starting GPU operation, if NV_ENC_FENCE_POINT_D3D12::bWait is set. The
                             fence NV_ENC_FENCE_POINT_D3D12::pFence and
                             NV_ENC_FENCE_POINT_D3D12::signalValue will be used to do GPU signal
                                     when GPU operation finishes, if
                             NV_ENC_FENCE_POINT_D3D12::bSignal is set. */
    uint32_t reserved1[247]; /**< [in]: Reserved and must be set to 0. */
    void* reserved2[61]; /**< [in]: Reserved and must be set to NULL. */
} NV_ENC_REGISTER_RESOURCE;

/** Macro for constructing the version field of ::_NV_ENC_REGISTER_RESOURCE */
#define NV_ENC_REGISTER_RESOURCE_VER NVENCAPI_STRUCT_VERSION(4)

/**
 * \struct _NV_ENC_STAT
 * Encode Stats structure.
 */
typedef struct _NV_ENC_STAT {
    uint32_t version; /**< [in]:  Struct version. Must be set to ::NV_ENC_STAT_VER. */
    uint32_t reserved; /**< [in]:  Reserved and must be set to 0 */
    NV_ENC_OUTPUT_PTR outputBitStream; /**< [out]: Specifies the pointer to output bitstream. */
    uint32_t bitStreamSize; /**< [out]: Size of generated bitstream in bytes. */
    uint32_t picType; /**< [out]: Picture type of encoded picture. See ::NV_ENC_PIC_TYPE. */
    uint32_t lastValidByteOffset; /**< [out]: Offset of last valid bytes of completed bitstream */
    uint32_t sliceOffsets[16]; /**< [out]: Offsets of each slice */
    uint32_t picIdx; /**< [out]: Picture number */
    uint32_t frameAvgQP; /**< [out]: Average QP of the frame. */
    uint32_t ltrFrame : 1; /**< [out]: Flag indicating this frame is marked as LTR frame */
    uint32_t reservedBitFields : 31; /**< [in]:  Reserved bit fields and must be set to 0 */
    uint32_t ltrFrameIdx; /**< [out]: Frame index associated with this LTR frame. */
    uint32_t intraMBCount; /**< [out]: For H264, Number of Intra MBs in the encoded frame. For HEVC,
                              Number of Intra CTBs in the encoded frame. */
    uint32_t interMBCount; /**< [out]: For H264, Number of Inter MBs in the encoded frame, includes
                              skip MBs. For HEVC, Number of Inter CTBs in the encoded frame. */
    int32_t averageMVX; /**< [out]: Average Motion Vector in X direction for the encoded frame. */
    int32_t averageMVY; /**< [out]: Average Motion Vector in y direction for the encoded frame. */
    uint32_t reserved1[226]; /**< [in]:  Reserved and must be set to 0 */
    void* reserved2[64]; /**< [in]:  Reserved and must be set to NULL */
} NV_ENC_STAT;

/** Macro for constructing the version field of ::_NV_ENC_STAT */
#define NV_ENC_STAT_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * \struct _NV_ENC_SEQUENCE_PARAM_PAYLOAD
 * Sequence and picture paramaters payload.
 */
typedef struct _NV_ENC_SEQUENCE_PARAM_PAYLOAD {
    uint32_t version; /**< [in]:  Struct version. Must be set to ::NV_ENC_INITIALIZE_PARAMS_VER. */
    uint32_t
        inBufferSize; /**< [in]:  Specifies the size of the spsppsBuffer provided by the client */
    uint32_t spsId; /**< [in]:  Specifies the SPS id to be used in sequence header. Default value is
                       0.  */
    uint32_t
        ppsId; /**< [in]:  Specifies the PPS id to be used in picture header. Default value is 0. */
    void* spsppsBuffer; /**< [in]:  Specifies bitstream header pointer of size
                           NV_ENC_SEQUENCE_PARAM_PAYLOAD::inBufferSize. It is the client's
                           responsibility to manage this memory. */
    uint32_t* outSPSPPSPayloadSize; /**< [out]: Size of the sequence and picture header in bytes. */
    uint32_t reserved[250]; /**< [in]:  Reserved and must be set to 0 */
    void* reserved2[64]; /**< [in]:  Reserved and must be set to NULL */
} NV_ENC_SEQUENCE_PARAM_PAYLOAD;

/** Macro for constructing the version field of ::_NV_ENC_SEQUENCE_PARAM_PAYLOAD */
#define NV_ENC_SEQUENCE_PARAM_PAYLOAD_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * Event registration/unregistration parameters.
 */
typedef struct _NV_ENC_EVENT_PARAMS {
    uint32_t version; /**< [in]: Struct version. Must be set to ::NV_ENC_EVENT_PARAMS_VER. */
    uint32_t reserved; /**< [in]: Reserved and must be set to 0 */
    void* completionEvent; /**< [in]: Handle to event to be registered/unregistered with the
                              NvEncodeAPI interface. */
    uint32_t reserved1[253]; /**< [in]: Reserved and must be set to 0    */
    void* reserved2[64]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_EVENT_PARAMS;

/** Macro for constructing the version field of ::_NV_ENC_EVENT_PARAMS */
#define NV_ENC_EVENT_PARAMS_VER NVENCAPI_STRUCT_VERSION(1)

/**
 * Encoder Session Creation parameters
 */
typedef struct _NV_ENC_OPEN_ENCODE_SESSIONEX_PARAMS {
    uint32_t version; /**< [in]: Struct version. Must be set to
                         ::NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS_VER. */
    NV_ENC_DEVICE_TYPE deviceType; /**< [in]: Specified the device Type */
    void* device; /**< [in]: Pointer to client device. */
    void* reserved; /**< [in]: Reserved and must be set to 0. */
    uint32_t apiVersion; /**< [in]: API version. Should be set to NVENCAPI_VERSION. */
    uint32_t reserved1[253]; /**< [in]: Reserved and must be set to 0    */
    void* reserved2[64]; /**< [in]: Reserved and must be set to NULL */
} NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS;
/** Macro for constructing the version field of ::_NV_ENC_OPEN_ENCODE_SESSIONEX_PARAMS */
#define NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS_VER NVENCAPI_STRUCT_VERSION(1)

/** @} */ /* END ENCODER_STRUCTURE */

/**
 * \addtogroup ENCODE_FUNC NvEncodeAPI Functions
 * @{
 */

// NvEncOpenEncodeSession
/**
 * \brief Opens an encoding session.
 *
 * Deprecated.
 *
 * \return
 * ::NV_ENC_ERR_INVALID_CALL\n
 *
 */
NVENCSTATUS NVENCAPI NvEncOpenEncodeSession(void* device, uint32_t deviceType, void** encoder);

// NvEncGetEncodeGuidCount
/**
 * \brief Retrieves the number of supported encode GUIDs.
 *
 * The function returns the number of codec GUIDs supported by the NvEncodeAPI
 * interface.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [out] encodeGUIDCount
 *   Number of supported encode GUIDs.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncGetEncodeGUIDCount(void* encoder, uint32_t* encodeGUIDCount);

// NvEncGetEncodeGUIDs
/**
 * \brief Retrieves an array of supported encoder codec GUIDs.
 *
 * The function returns an array of codec GUIDs supported by the NvEncodeAPI interface.
 * The client must allocate an array where the NvEncodeAPI interface can
 * fill the supported GUIDs and pass the pointer in \p *GUIDs parameter.
 * The size of the array can be determined by using ::NvEncGetEncodeGUIDCount() API.
 * The Nvidia Encoding interface returns the number of codec GUIDs it has actually
 * filled in the GUID array in the \p GUIDCount parameter.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] guidArraySize
 *   Number of GUIDs to retrieved. Should be set to the number retrieved using
 *   ::NvEncGetEncodeGUIDCount.
 * \param [out] GUIDs
 *   Array of supported Encode GUIDs.
 * \param [out] GUIDCount
 *   Number of supported Encode GUIDs.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncGetEncodeGUIDs(void* encoder, GUID* GUIDs, uint32_t guidArraySize, uint32_t* GUIDCount);

// NvEncGetEncodeProfileGuidCount
/**
 * \brief Retrieves the number of supported profile GUIDs.
 *
 * The function returns the number of profile GUIDs supported for a given codec.
 * The client must first enumerate the codec GUIDs supported by the NvEncodeAPI
 * interface. After determining the codec GUID, it can query the NvEncodeAPI
 * interface to determine the number of profile GUIDs supported for a particular
 * codec GUID.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] encodeGUID
 *   The codec GUID for which the profile GUIDs are being enumerated.
 * \param [out] encodeProfileGUIDCount
 *   Number of encode profiles supported for the given encodeGUID.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncGetEncodeProfileGUIDCount(void* encoder, GUID encodeGUID, uint32_t* encodeProfileGUIDCount);

// NvEncGetEncodeProfileGUIDs
/**
 * \brief Retrieves an array of supported encode profile GUIDs.
 *
 * The function returns an array of supported profile GUIDs for a particular
 * codec GUID. The client must allocate an array where the NvEncodeAPI interface
 * can populate the profile GUIDs. The client can determine the array size using
 * ::NvEncGetEncodeProfileGUIDCount() API. The client must also validiate that the
 * NvEncodeAPI interface supports the GUID the client wants to pass as \p encodeGUID
 * parameter.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] encodeGUID
 *   The encode GUID whose profile GUIDs are being enumerated.
 * \param [in] guidArraySize
 *   Number of GUIDs to be retrieved. Should be set to the number retrieved using
 *   ::NvEncGetEncodeProfileGUIDCount.
 * \param [out] profileGUIDs
 *   Array of supported Encode Profile GUIDs
 * \param [out] GUIDCount
 *   Number of valid encode profile GUIDs in \p profileGUIDs array.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncGetEncodeProfileGUIDs(
    void* encoder, GUID encodeGUID, GUID* profileGUIDs, uint32_t guidArraySize, uint32_t* GUIDCount
);

// NvEncGetInputFormatCount
/**
 * \brief Retrieve the number of supported Input formats.
 *
 * The function returns the number of supported input formats. The client must
 * query the NvEncodeAPI interface to determine the supported input formats
 * before creating the input surfaces.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] encodeGUID
 *   Encode GUID, corresponding to which the number of supported input formats
 *   is to be retrieved.
 * \param [out] inputFmtCount
 *   Number of input formats supported for specified Encode GUID.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 */
NVENCSTATUS NVENCAPI
NvEncGetInputFormatCount(void* encoder, GUID encodeGUID, uint32_t* inputFmtCount);

// NvEncGetInputFormats
/**
 * \brief Retrieves an array of supported Input formats
 *
 * Returns an array of supported input formats  The client must use the input
 * format to create input surface using ::NvEncCreateInputBuffer() API.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] encodeGUID
 *   Encode GUID, corresponding to which the number of supported input formats
 *   is to be retrieved.
 *\param [in] inputFmtArraySize
 *   Size input format count array passed in \p inputFmts.
 *\param [out] inputFmts
 *   Array of input formats supported for this Encode GUID.
 *\param [out] inputFmtCount
 *   The number of valid input format types returned by the NvEncodeAPI
 *   interface in \p inputFmts array.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncGetInputFormats(
    void* encoder,
    GUID encodeGUID,
    NV_ENC_BUFFER_FORMAT* inputFmts,
    uint32_t inputFmtArraySize,
    uint32_t* inputFmtCount
);

// NvEncGetEncodeCaps
/**
 * \brief Retrieves the capability value for a specified encoder attribute.
 *
 * The function returns the capability value for a given encoder attribute. The
 * client must validate the encodeGUID using ::NvEncGetEncodeGUIDs() API before
 * calling this function. The encoder attribute being queried are enumerated in
 * ::NV_ENC_CAPS_PARAM enum.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] encodeGUID
 *   Encode GUID, corresponding to which the capability attribute is to be retrieved.
 * \param [in] capsParam
 *   Used to specify attribute being queried. Refer ::NV_ENC_CAPS_PARAM for  more
 * details.
 * \param [out] capsVal
 *   The value corresponding to the capability attribute being queried.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 */
NVENCSTATUS NVENCAPI
NvEncGetEncodeCaps(void* encoder, GUID encodeGUID, NV_ENC_CAPS_PARAM* capsParam, int* capsVal);

// NvEncGetEncodePresetCount
/**
 * \brief Retrieves the number of supported preset GUIDs.
 *
 * The function returns the number of preset GUIDs available for a given codec.
 * The client must validate the codec GUID using ::NvEncGetEncodeGUIDs() API
 * before calling this function.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] encodeGUID
 *   Encode GUID, corresponding to which the number of supported presets is to
 *   be retrieved.
 * \param [out] encodePresetGUIDCount
 *   Receives the number of supported preset GUIDs.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncGetEncodePresetCount(void* encoder, GUID encodeGUID, uint32_t* encodePresetGUIDCount);

// NvEncGetEncodePresetGUIDs
/**
 * \brief Receives an array of supported encoder preset GUIDs.
 *
 * The function returns an array of encode preset GUIDs available for a given codec.
 * The client can directly use one of the preset GUIDs based upon the use case
 * or target device. The preset GUID chosen can be directly used in
 * NV_ENC_INITIALIZE_PARAMS::presetGUID parameter to ::NvEncEncodePicture() API.
 * Alternately client can  also use the preset GUID to retrieve the encoding config
 * parameters being used by NvEncodeAPI interface for that given preset, using
 * ::NvEncGetEncodePresetConfig() API. It can then modify preset config parameters
 * as per its use case and send it to NvEncodeAPI interface as part of
 * NV_ENC_INITIALIZE_PARAMS::encodeConfig parameter for NvEncInitializeEncoder()
 * API.
 *
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] encodeGUID
 *   Encode GUID, corresponding to which the list of supported presets is to be
 *   retrieved.
 * \param [in] guidArraySize
 *   Size of array of preset GUIDs passed in \p preset GUIDs
 * \param [out] presetGUIDs
 *   Array of supported Encode preset GUIDs from the NvEncodeAPI interface
 *   to client.
 * \param [out] encodePresetGUIDCount
 *   Receives the number of preset GUIDs returned by the NvEncodeAPI
 *   interface.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncGetEncodePresetGUIDs(
    void* encoder,
    GUID encodeGUID,
    GUID* presetGUIDs,
    uint32_t guidArraySize,
    uint32_t* encodePresetGUIDCount
);

// NvEncGetEncodePresetConfig
/**
 * \brief Returns a preset config structure supported for given preset GUID.
 *
 * The function returns a preset config structure for a given preset GUID.
 * NvEncGetEncodePresetConfig() API is not applicable to AV1.
 * Before using this function the client must enumerate the preset GUIDs available for
 * a given codec. The preset config structure can be modified by the client depending
 * upon its use case and can be then used to initialize the encoder using
 * ::NvEncInitializeEncoder() API. The client can use this function only if it
 * wants to modify the NvEncodeAPI preset configuration, otherwise it can
 * directly use the preset GUID.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] encodeGUID
 *   Encode GUID, corresponding to which the list of supported presets is to be
 *   retrieved.
 * \param [in] presetGUID
 *   Preset GUID, corresponding to which the Encoding configurations is to be
 *   retrieved.
 * \param [out] presetConfig
 *   The requested Preset Encoder Attribute set. Refer ::_NV_ENC_CONFIG for
 *    more details.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncGetEncodePresetConfig(
    void* encoder, GUID encodeGUID, GUID presetGUID, NV_ENC_PRESET_CONFIG* presetConfig
);

// NvEncGetEncodePresetConfigEx
/**
 * \brief Returns a preset config structure supported for given preset GUID.
 *
 * The function returns a preset config structure for a given preset GUID and tuning info.
 * NvEncGetEncodePresetConfigEx() API is not applicable to H264 and HEVC meonly mode.
 * Before using this function the client must enumerate the preset GUIDs available for
 * a given codec. The preset config structure can be modified by the client depending
 * upon its use case and can be then used to initialize the encoder using
 * ::NvEncInitializeEncoder() API. The client can use this function only if it
 * wants to modify the NvEncodeAPI preset configuration, otherwise it can
 * directly use the preset GUID.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] encodeGUID
 *   Encode GUID, corresponding to which the list of supported presets is to be
 *   retrieved.
 * \param [in] presetGUID
 *   Preset GUID, corresponding to which the Encoding configurations is to be
 *   retrieved.
 * \param [in] tuningInfo
 *   tuning info, corresponding to which the Encoding configurations is to be
 *   retrieved.
 * \param [out] presetConfig
 *   The requested Preset Encoder Attribute set. Refer ::_NV_ENC_CONFIG for
 *    more details.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncGetEncodePresetConfigEx(
    void* encoder,
    GUID encodeGUID,
    GUID presetGUID,
    NV_ENC_TUNING_INFO tuningInfo,
    NV_ENC_PRESET_CONFIG* presetConfig
);

// NvEncInitializeEncoder
/**
 * \brief Initialize the encoder.
 *
 * This API must be used to initialize the encoder. The initialization parameter
 * is passed using \p *createEncodeParams  The client must send the following
 * fields of the _NV_ENC_INITIALIZE_PARAMS structure with a valid value.
 * - NV_ENC_INITIALIZE_PARAMS::encodeGUID
 * - NV_ENC_INITIALIZE_PARAMS::encodeWidth
 * - NV_ENC_INITIALIZE_PARAMS::encodeHeight
 *
 * The client can pass a preset GUID directly to the NvEncodeAPI interface using
 * NV_ENC_INITIALIZE_PARAMS::presetGUID field. If the client doesn't pass
 * NV_ENC_INITIALIZE_PARAMS::encodeConfig structure, the codec specific parameters
 * will be selected based on the preset GUID. The preset GUID must have been
 * validated by the client using ::NvEncGetEncodePresetGUIDs() API.
 * If the client passes a custom ::_NV_ENC_CONFIG structure through
 * NV_ENC_INITIALIZE_PARAMS::encodeConfig , it will override the codec specific parameters
 * based on the preset GUID. It is recommended that even if the client passes a custom config,
 * it should also send a preset GUID. In this case, the preset GUID passed by the client
 * will not override any of the custom config parameters programmed by the client,
 * it is only used as a hint by the NvEncodeAPI interface to determine certain encoder parameters
 * which are not exposed to the client.
 *
 * There are two modes of operation for the encoder namely:
 * - Asynchronous mode
 * - Synchronous mode
 *
 * The client can select asynchronous or synchronous mode by setting the \p
 * enableEncodeAsync field in ::_NV_ENC_INITIALIZE_PARAMS to 1 or 0 respectively.
 *\par Asynchronous mode of operation:
 * The Asynchronous mode can be enabled by setting NV_ENC_INITIALIZE_PARAMS::enableEncodeAsync to 1.
 * The client operating in asynchronous mode must allocate completion event object
 * for each output buffer and pass the completion event object in the
 * ::NvEncEncodePicture() API. The client can create another thread and wait on
 * the event object to be signaled by NvEncodeAPI interface on completion of the
 * encoding process for the output frame. This should unblock the main thread from
 * submitting work to the encoder. When the event is signaled the client can call
 * NvEncodeAPI interfaces to copy the bitstream data using ::NvEncLockBitstream()
 * API. This is the preferred mode of operation.
 *
 * NOTE: Asynchronous mode is not supported on Linux.
 *
 *\par Synchronous mode of operation:
 * The client can select synchronous mode by setting NV_ENC_INITIALIZE_PARAMS::enableEncodeAsync to
 *0. The client working in synchronous mode can work in a single threaded or multi threaded mode.
 *The client need not allocate any event objects. The client can only lock the bitstream data after
 *NvEncodeAPI interface has returned
 * ::NV_ENC_SUCCESS from encode picture. The NvEncodeAPI interface can return
 * ::NV_ENC_ERR_NEED_MORE_INPUT error code from ::NvEncEncodePicture() API. The
 * client must not lock the output buffer in such case but should send the next
 * frame for encoding. The client must keep on calling ::NvEncEncodePicture() API
 * until it returns ::NV_ENC_SUCCESS. \n
 * The client must always lock the bitstream data in order in which it has submitted.
 * This is true for both asynchronous and synchronous mode.
 *
 *\par Picture type decision:
 * If the client is taking the picture type decision and it must disable the picture
 * type decision module in NvEncodeAPI by setting NV_ENC_INITIALIZE_PARAMS::enablePTD
 * to 0. In this case the client is  required to send the picture in encoding
 * order to NvEncodeAPI by doing the re-ordering for B frames. \n
 * If the client doesn't want to take the picture type decision it can enable
 * picture type decision module in the NvEncodeAPI interface by setting
 * NV_ENC_INITIALIZE_PARAMS::enablePTD to 1 and send the input pictures in display
 * order.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] createEncodeParams
 *   Refer ::_NV_ENC_INITIALIZE_PARAMS for details.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncInitializeEncoder(void* encoder, NV_ENC_INITIALIZE_PARAMS* createEncodeParams);

// NvEncCreateInputBuffer
/**
 * \brief Allocates Input buffer.
 *
 * This function is used to allocate an input buffer. The client must enumerate
 * the input buffer format before allocating the input buffer resources. The
 * NV_ENC_INPUT_PTR returned by the NvEncodeAPI interface in the
 * NV_ENC_CREATE_INPUT_BUFFER::inputBuffer field can be directly used in
 * ::NvEncEncodePicture() API. The number of input buffers to be allocated by the
 * client must be at least 4 more than the number of B frames being used for encoding.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in,out] createInputBufferParams
 *  Pointer to the ::NV_ENC_CREATE_INPUT_BUFFER structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncCreateInputBuffer(void* encoder, NV_ENC_CREATE_INPUT_BUFFER* createInputBufferParams);

// NvEncDestroyInputBuffer
/**
 * \brief Release an input buffers.
 *
 * This function is used to free an input buffer. If the client has allocated
 * any input buffer using ::NvEncCreateInputBuffer() API, it must free those
 * input buffers by calling this function. The client must release the input
 * buffers before destroying the encoder using ::NvEncDestroyEncoder() API.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] inputBuffer
 *   Pointer to the input buffer to be released.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncDestroyInputBuffer(void* encoder, NV_ENC_INPUT_PTR inputBuffer);

// NvEncSetIOCudaStreams
/**
 * \brief Set input and output CUDA stream for specified encoder attribute.
 *
 * Encoding may involve CUDA pre-processing on the input and post-processing on encoded output.
 * This function is used to set input and output CUDA streams to pipeline the CUDA pre-processing
 * and post-processing tasks. Clients should call this function before the call to
 * NvEncUnlockInputBuffer(). If this function is not called, the default CUDA stream is used for
 * input and output processing. After a successful call to this function, the streams specified
 * in that call will replace the previously-used streams.
 * This API is supported for NVCUVID interface only.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] inputStream
 *   Pointer to CUstream which is used to process ::NV_ENC_PIC_PARAMS::inputFrame for encode.
 *   In case of ME-only mode, inputStream is used to process ::NV_ENC_MEONLY_PARAMS::inputBuffer and
 *   ::NV_ENC_MEONLY_PARAMS::referenceFrame
 * \param [in] outputStream
 *  Pointer to CUstream which is used to process ::NV_ENC_PIC_PARAMS::outputBuffer for encode.
 *  In case of ME-only mode, outputStream is used to process ::NV_ENC_MEONLY_PARAMS::mvBuffer
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_GENERIC \n
 */
NVENCSTATUS NVENCAPI NvEncSetIOCudaStreams(
    void* encoder, NV_ENC_CUSTREAM_PTR inputStream, NV_ENC_CUSTREAM_PTR outputStream
);

// NvEncCreateBitstreamBuffer
/**
 * \brief Allocates an output bitstream buffer
 *
 * This function is used to allocate an output bitstream buffer and returns a
 * NV_ENC_OUTPUT_PTR to bitstream  buffer to the client in the
 * NV_ENC_CREATE_BITSTREAM_BUFFER::bitstreamBuffer field.
 * The client can only call this function after the encoder session has been
 * initialized using ::NvEncInitializeEncoder() API. The minimum number of output
 * buffers allocated by the client must be at least 4 more than the number of B
 * B frames being used for encoding. The client can only access the output
 * bitstream data by locking the \p bitstreamBuffer using the ::NvEncLockBitstream()
 * function.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in,out] createBitstreamBufferParams
 *   Pointer ::NV_ENC_CREATE_BITSTREAM_BUFFER for details.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncCreateBitstreamBuffer(
    void* encoder, NV_ENC_CREATE_BITSTREAM_BUFFER* createBitstreamBufferParams
);

// NvEncDestroyBitstreamBuffer
/**
 * \brief Release a bitstream buffer.
 *
 * This function is used to release the output bitstream buffer allocated using
 * the ::NvEncCreateBitstreamBuffer() function. The client must release the output
 * bitstreamBuffer using this function before destroying the encoder session.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] bitstreamBuffer
 *   Pointer to the bitstream buffer being released.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncDestroyBitstreamBuffer(void* encoder, NV_ENC_OUTPUT_PTR bitstreamBuffer);

// NvEncEncodePicture
/**
 * \brief Submit an input picture for encoding.
 *
 * This function is used to submit an input picture buffer for encoding. The
 * encoding parameters are passed using \p *encodePicParams which is a pointer
 * to the ::_NV_ENC_PIC_PARAMS structure.
 *
 * If the client has set NV_ENC_INITIALIZE_PARAMS::enablePTD to 0, then it must
 * send a valid value for the following fields.
 * - NV_ENC_PIC_PARAMS::pictureType
 * - NV_ENC_PIC_PARAMS_H264::displayPOCSyntax (H264 only)
 * - NV_ENC_PIC_PARAMS_H264::frameNumSyntax(H264 only)
 * - NV_ENC_PIC_PARAMS_H264::refPicFlag(H264 only)
 *
 *\par MVC Encoding:
 * For MVC encoding the client must call encode picture API for each view separately
 * and must pass valid view id in NV_ENC_PIC_PARAMS_MVC::viewID field. Currently
 * NvEncodeAPI only support stereo MVC so client must send viewID as 0 for base
 * view and view ID as 1 for dependent view.
 *
 *\par Asynchronous Encoding
 * If the client has enabled asynchronous mode of encoding by setting
 * NV_ENC_INITIALIZE_PARAMS::enableEncodeAsync to 1 in the ::NvEncInitializeEncoder()
 * API ,then the client must send a valid NV_ENC_PIC_PARAMS::completionEvent.
 * Incase of asynchronous mode of operation, client can queue the ::NvEncEncodePicture()
 * API commands from the main thread and then queue output buffers to be processed
 * to a secondary worker thread. Before the locking the output buffers in the
 * secondary thread , the client must wait on NV_ENC_PIC_PARAMS::completionEvent
 * it has queued in ::NvEncEncodePicture() API call. The client must always process
 * completion event and the output buffer in the same order in which they have been
 * submitted for encoding. The NvEncodeAPI interface is responsible for any
 * re-ordering required for B frames and will always ensure that encoded bitstream
 * data is written in the same order in which output buffer is submitted.
 * The NvEncodeAPI interface may return ::NV_ENC_ERR_NEED_MORE_INPUT error code for
 * some ::NvEncEncodePicture() API calls but the client must not treat it as a fatal error.
 * The NvEncodeAPI interface might not be able to submit an input picture buffer for encoding
 * immediately due to re-ordering for B frames.
 *\code
  The below example shows how  asynchronous encoding in case of 1 B frames
  ------------------------------------------------------------------------
  Suppose the client allocated 4 input buffers(I1,I2..), 4 output buffers(O1,O2..)
  and 4 completion events(E1, E2, ...). The NvEncodeAPI interface will need to
  keep a copy of the input buffers for re-ordering and it allocates following
  internal buffers (NvI1, NvI2...). These internal buffers are managed by NvEncodeAPI
  and the client is not responsible for the allocating or freeing the memory of
  the internal buffers.

  a) The client main thread will queue the following encode frame calls.
  Note the picture type is unknown to the client, the decision is being taken by
  NvEncodeAPI interface. The client should pass ::_NV_ENC_PIC_PARAMS parameter
  consisting of allocated input buffer, output buffer and output events in successive
  ::NvEncEncodePicture() API calls along with other required encode picture params.
  For example:
  1st EncodePicture parameters - (I1, O1, E1)
  2nd EncodePicture parameters - (I2, O2, E2)
  3rd EncodePicture parameters - (I3, O3, E3)

  b) NvEncodeAPI SW will receive the following encode Commands from the client.
  The left side shows input from client in the form (Input buffer, Output Buffer,
  Output Event). The right hand side shows a possible picture type decision take by
  the NvEncodeAPI interface.
  (I1, O1, E1)    ---P1 Frame
  (I2, O2, E2)    ---B2 Frame
  (I3, O3, E3)    ---P3 Frame

  c) NvEncodeAPI interface will make a copy of the input buffers to its internal
   buffers for re-ordering. These copies are done as part of nvEncEncodePicture
   function call from the client and NvEncodeAPI interface is responsible for
   synchronization of copy operation with the actual encoding operation.
   I1 --> NvI1
   I2 --> NvI2
   I3 --> NvI3

   d) The NvEncodeAPI encodes I1 as P frame and submits I1 to encoder HW and returns
 ::NV_ENC_SUCCESS. The NvEncodeAPI tries to encode I2 as B frame and fails with
 ::NV_ENC_ERR_NEED_MORE_INPUT error code. The error is not fatal and it notifies client that I2 is
 not submitted to encoder immediately. The NvEncodeAPI encodes I3 as P frame and submits I3 for
 encoding which will be used as  backward reference frame for I2. The NvEncodeAPI then submits I2
 for encoding and returns ::NV_ENC_SUCESS. Both the submission are part of the same
 ::NvEncEncodePicture() function call.

  e) After returning from ::NvEncEncodePicture() call , the client must queue the output
   bitstream  processing work to the secondary thread. The output bitstream processing
   for asynchronous mode consist of first waiting on completion event(E1, E2..)
   and then locking the output bitstream buffer(O1, O2..) for reading the encoded
   data. The work queued to the secondary thread by the client is in the following order
   (I1, O1, E1)
   (I2, O2, E2)
   (I3, O3, E3)
   Note they are in the same order in which client calls ::NvEncEncodePicture() API
   in \p step a).

  f) NvEncodeAPI interface  will do the re-ordering such that Encoder HW will receive
  the following encode commands:
  (NvI1, O1, E1)   ---P1 Frame
  (NvI3, O2, E2)   ---P3 Frame
  (NvI2, O3, E3)   ---B2 frame

  g) After the encoding operations are completed, the events will be signaled
  by NvEncodeAPI interface in the following order :
  (O1, E1) ---P1 Frame ,output bitstream copied to O1 and event E1 signaled.
  (O2, E2) ---P3 Frame ,output bitstream copied to O2 and event E2 signaled.
  (O3, E3) ---B2 Frame ,output bitstream copied to O3 and event E3 signaled.

  h) The client must lock the bitstream data using ::NvEncLockBitstream() API in
   the order O1,O2,O3  to read the encoded data, after waiting for the events
   to be signaled in the same order i.e E1, E2 and E3.The output processing is
   done in the secondary thread in the following order:
   Waits on E1, copies encoded bitstream from O1
   Waits on E2, copies encoded bitstream from O2
   Waits on E3, copies encoded bitstream from O3

  -Note the client will receive the events signaling and output buffer in the
   same order in which they have submitted for encoding.
  -Note the LockBitstream will have picture type field which will notify the
   output picture type to the clients.
  -Note the input, output buffer and the output completion event are free to be
   reused once NvEncodeAPI interfaced has signaled the event and the client has
   copied the data from the output buffer.

 * \endcode
 *
 *\par Synchronous Encoding
 * The client can enable synchronous mode of encoding by setting
 * NV_ENC_INITIALIZE_PARAMS::enableEncodeAsync to 0 in ::NvEncInitializeEncoder() API.
 * The NvEncodeAPI interface may return ::NV_ENC_ERR_NEED_MORE_INPUT error code for
 * some ::NvEncEncodePicture() API calls when NV_ENC_INITIALIZE_PARAMS::enablePTD
 * is set to 1, but the client must not treat it as a fatal error. The NvEncodeAPI
 * interface might not be able to submit an input picture buffer for encoding
 * immediately due to re-ordering for B frames. The NvEncodeAPI interface cannot
 * submit the input picture which is decided to be encoded as B frame as it waits
 * for backward reference from  temporally subsequent frames. This input picture
 * is buffered internally and waits for more input picture to arrive. The client
 * must not call ::NvEncLockBitstream() API on the output buffers whose
 * ::NvEncEncodePicture() API returns ::NV_ENC_ERR_NEED_MORE_INPUT. The client must
 * wait for the NvEncodeAPI interface to return ::NV_ENC_SUCCESS before locking the
 * output bitstreams to read the encoded bitstream data. The following example
 * explains the scenario with synchronous encoding with 2 B frames.
 *\code
 The below example shows how  synchronous encoding works in case of 1 B frames
 -----------------------------------------------------------------------------
 Suppose the client allocated 4 input buffers(I1,I2..), 4 output buffers(O1,O2..)
 and 4 completion events(E1, E2, ...). The NvEncodeAPI interface will need to
 keep a copy of the input buffers for re-ordering and it allocates following
 internal buffers (NvI1, NvI2...). These internal buffers are managed by NvEncodeAPI
 and the client is not responsible for the allocating or freeing the memory of
 the internal buffers.

 The client calls ::NvEncEncodePicture() API with input buffer I1 and output buffer O1.
 The NvEncodeAPI decides to encode I1 as P frame and submits it to encoder
 HW and returns ::NV_ENC_SUCCESS.
 The client can now read the encoded data by locking the output O1 by calling
 NvEncLockBitstream API.

 The client calls ::NvEncEncodePicture() API with input buffer I2 and output buffer O2.
 The NvEncodeAPI decides to encode I2 as B frame and buffers I2 by copying it
 to internal buffer and returns ::NV_ENC_ERR_NEED_MORE_INPUT.
 The error is not fatal and it notifies client that it cannot read the encoded
 data by locking the output O2 by calling ::NvEncLockBitstream() API without submitting
 more work to the NvEncodeAPI interface.

 The client calls ::NvEncEncodePicture() with input buffer I3 and output buffer O3.
 The NvEncodeAPI decides to encode I3 as P frame and it first submits I3 for
 encoding which will be used as backward reference frame for I2.
 The NvEncodeAPI then submits I2 for encoding and returns ::NV_ENC_SUCESS. Both
 the submission are part of the same ::NvEncEncodePicture() function call.
 The client can now read the encoded data for both the frames by locking the output
 O2 followed by  O3 ,by calling ::NvEncLockBitstream() API.

 The client must always lock the output in the same order in which it has submitted
 to receive the encoded bitstream in correct encoding order.

 * \endcode
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in,out] encodePicParams
 *   Pointer to the ::_NV_ENC_PIC_PARAMS structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_ENCODER_BUSY \n
 * ::NV_ENC_ERR_NEED_MORE_INPUT \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncEncodePicture(void* encoder, NV_ENC_PIC_PARAMS* encodePicParams);

// NvEncLockBitstream
/**
 * \brief Lock output bitstream buffer
 *
 * This function is used to lock the bitstream buffer to read the encoded data.
 * The client can only access the encoded data by calling this function.
 * The pointer to client accessible encoded data is returned in the
 * NV_ENC_LOCK_BITSTREAM::bitstreamBufferPtr field. The size of the encoded data
 * in the output buffer is returned in the NV_ENC_LOCK_BITSTREAM::bitstreamSizeInBytes
 * The NvEncodeAPI interface also returns the output picture type and picture structure
 * of the encoded frame in NV_ENC_LOCK_BITSTREAM::pictureType and
 * NV_ENC_LOCK_BITSTREAM::pictureStruct fields respectively. If the client has
 * set NV_ENC_LOCK_BITSTREAM::doNotWait to 1, the function might return
 * ::NV_ENC_ERR_LOCK_BUSY if client is operating in synchronous mode. This is not
 * a fatal failure if NV_ENC_LOCK_BITSTREAM::doNotWait is set to 1. In the above case the client can
 * retry the function after few milliseconds.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in,out] lockBitstreamBufferParams
 *   Pointer to the ::_NV_ENC_LOCK_BITSTREAM structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_LOCK_BUSY \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncLockBitstream(void* encoder, NV_ENC_LOCK_BITSTREAM* lockBitstreamBufferParams);

// NvEncUnlockBitstream
/**
 * \brief Unlock the output bitstream buffer
 *
 * This function is used to unlock the output bitstream buffer after the client
 * has read the encoded data from output buffer. The client must call this function
 * to unlock the output buffer which it has previously locked using ::NvEncLockBitstream()
 * function. Using a locked bitstream buffer in ::NvEncEncodePicture() API will cause
 * the function to fail.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in,out] bitstreamBuffer
 *   bitstream buffer pointer being unlocked
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncUnlockBitstream(void* encoder, NV_ENC_OUTPUT_PTR bitstreamBuffer);

// NvLockInputBuffer
/**
 * \brief Locks an input buffer
 *
 * This function is used to lock the input buffer to load the uncompressed YUV
 * pixel data into input buffer memory. The client must pass the NV_ENC_INPUT_PTR
 * it had previously allocated using ::NvEncCreateInputBuffer()in the
 * NV_ENC_LOCK_INPUT_BUFFER::inputBuffer field.
 * The NvEncodeAPI interface returns pointer to client accessible input buffer
 * memory in NV_ENC_LOCK_INPUT_BUFFER::bufferDataPtr field.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in,out] lockInputBufferParams
 *   Pointer to the ::_NV_ENC_LOCK_INPUT_BUFFER structure
 *
 * \return
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_LOCK_BUSY \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncLockInputBuffer(void* encoder, NV_ENC_LOCK_INPUT_BUFFER* lockInputBufferParams);

// NvUnlockInputBuffer
/**
 * \brief Unlocks the input buffer
 *
 * This function is used to unlock the input buffer memory previously locked for
 * uploading YUV pixel data. The input buffer must be unlocked before being used
 * again for encoding, otherwise NvEncodeAPI will fail the ::NvEncEncodePicture()
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] inputBuffer
 *   Pointer to the input buffer that is being unlocked.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 *
 */
NVENCSTATUS NVENCAPI NvEncUnlockInputBuffer(void* encoder, NV_ENC_INPUT_PTR inputBuffer);

// NvEncGetEncodeStats
/**
 * \brief Get encoding statistics.
 *
 * This function is used to retrieve the encoding statistics.
 * This API is not supported when encode device type is CUDA.
 * Note that this API will be removed in future Video Codec SDK release.
 * Clients should use NvEncLockBitstream() API to retrieve the encoding statistics.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in,out] encodeStats
 *   Pointer to the ::_NV_ENC_STAT structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncGetEncodeStats(void* encoder, NV_ENC_STAT* encodeStats);

// NvEncGetSequenceParams
/**
 * \brief Get encoded sequence and picture header.
 *
 * This function can be used to retrieve the sequence and picture header out of
 * band. The client must call this function only after the encoder has been
 * initialized using ::NvEncInitializeEncoder() function. The client must
 * allocate the memory where the NvEncodeAPI interface can copy the bitstream
 * header and pass the pointer to the memory in NV_ENC_SEQUENCE_PARAM_PAYLOAD::spsppsBuffer.
 * The size of buffer is passed in the field  NV_ENC_SEQUENCE_PARAM_PAYLOAD::inBufferSize.
 * The NvEncodeAPI interface will copy the bitstream header payload and returns
 * the actual size of the bitstream header in the field
 * NV_ENC_SEQUENCE_PARAM_PAYLOAD::outSPSPPSPayloadSize.
 * The client must call  ::NvEncGetSequenceParams() function from the same thread which is
 * being used to call ::NvEncEncodePicture() function.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in,out] sequenceParamPayload
 *   Pointer to the ::_NV_ENC_SEQUENCE_PARAM_PAYLOAD structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncGetSequenceParams(void* encoder, NV_ENC_SEQUENCE_PARAM_PAYLOAD* sequenceParamPayload);

// NvEncGetSequenceParamEx
/**
 * \brief Get sequence and picture header.
 *
 * This function can be used to retrieve the sequence and picture header out of band, even when
 * encoder has not been initialized using ::NvEncInitializeEncoder() function.
 * The client must allocate the memory where the NvEncodeAPI interface can copy the bitstream
 * header and pass the pointer to the memory in NV_ENC_SEQUENCE_PARAM_PAYLOAD::spsppsBuffer.
 * The size of buffer is passed in the field  NV_ENC_SEQUENCE_PARAM_PAYLOAD::inBufferSize.
 * If encoder has not been initialized using ::NvEncInitializeEncoder() function, client must
 * send NV_ENC_INITIALIZE_PARAMS as input. The NV_ENC_INITIALIZE_PARAMS passed must be same as the
 * one which will be used for initializing encoder using ::NvEncInitializeEncoder() function later.
 * If encoder is already initialized using ::NvEncInitializeEncoder() function, the provided
 * NV_ENC_INITIALIZE_PARAMS structure is ignored. The NvEncodeAPI interface will copy the bitstream
 * header payload and returns the actual size of the bitstream header in the field
 * NV_ENC_SEQUENCE_PARAM_PAYLOAD::outSPSPPSPayloadSize. The client must call
 * ::NvEncGetSequenceParamsEx() function from the same thread which is being used to call
 * ::NvEncEncodePicture() function.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] encInitParams
 *   Pointer to the _NV_ENC_INITIALIZE_PARAMS structure.
 * \param [in,out] sequenceParamPayload
 *   Pointer to the ::_NV_ENC_SEQUENCE_PARAM_PAYLOAD structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncGetSequenceParamEx(
    void* encoder,
    NV_ENC_INITIALIZE_PARAMS* encInitParams,
    NV_ENC_SEQUENCE_PARAM_PAYLOAD* sequenceParamPayload
);

// NvEncRegisterAsyncEvent
/**
 * \brief Register event for notification to encoding completion.
 *
 * This function is used to register the completion event with NvEncodeAPI
 * interface. The event is required when the client has configured the encoder to
 * work in asynchronous mode. In this mode the client needs to send a completion
 * event with every output buffer. The NvEncodeAPI interface will signal the
 * completion of the encoding process using this event. Only after the event is
 * signaled the client can get the encoded data using ::NvEncLockBitstream() function.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] eventParams
 *   Pointer to the ::_NV_ENC_EVENT_PARAMS structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncRegisterAsyncEvent(void* encoder, NV_ENC_EVENT_PARAMS* eventParams);

// NvEncUnregisterAsyncEvent
/**
 * \brief Unregister completion event.
 *
 * This function is used to unregister completion event which has been previously
 * registered using ::NvEncRegisterAsyncEvent() function. The client must unregister
 * all events before destroying the encoder using ::NvEncDestroyEncoder() function.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] eventParams
 *   Pointer to the ::_NV_ENC_EVENT_PARAMS structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncUnregisterAsyncEvent(void* encoder, NV_ENC_EVENT_PARAMS* eventParams);

// NvEncMapInputResource
/**
 * \brief Map an externally created input resource pointer for encoding.
 *
 * Maps an externally allocated input resource [using and returns a NV_ENC_INPUT_PTR
 * which can be used for encoding in the ::NvEncEncodePicture() function. The
 * mapped resource is returned in the field NV_ENC_MAP_INPUT_RESOURCE::outputResourcePtr.
 * The NvEncodeAPI interface also returns the buffer format of the mapped resource
 * in the field NV_ENC_MAP_INPUT_RESOURCE::outbufferFmt.
 * This function provides synchronization guarantee that any graphics work submitted
 * on the input buffer is completed before the buffer is used for encoding. This is
 * also true for compute (i.e. CUDA) work, provided that the previous workload using
 * the input resource was submitted to the default stream.
 * The client should not access any input buffer while they are mapped by the encoder.
 * For D3D12 interface type, this function does not provide synchronization guarantee.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in,out] mapInputResParams
 *   Pointer to the ::_NV_ENC_MAP_INPUT_RESOURCE structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_RESOURCE_NOT_REGISTERED \n
 * ::NV_ENC_ERR_MAP_FAILED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncMapInputResource(void* encoder, NV_ENC_MAP_INPUT_RESOURCE* mapInputResParams);

// NvEncUnmapInputResource
/**
 * \brief  UnMaps a NV_ENC_INPUT_PTR  which was mapped for encoding
 *
 *
 * UnMaps an input buffer which was previously mapped using ::NvEncMapInputResource()
 * API. The mapping created using ::NvEncMapInputResource() should be invalidated
 * using this API before the external resource is destroyed by the client. The client
 * must unmap the buffer after ::NvEncLockBitstream() API returns successfully for encode
 * work submitted using the mapped input buffer.
 *
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] mappedInputBuffer
 *   Pointer to the NV_ENC_INPUT_PTR
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_RESOURCE_NOT_REGISTERED \n
 * ::NV_ENC_ERR_RESOURCE_NOT_MAPPED \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncUnmapInputResource(void* encoder, NV_ENC_INPUT_PTR mappedInputBuffer);

// NvEncDestroyEncoder
/**
 * \brief Destroy Encoding Session
 *
 * Destroys the encoder session previously created using ::NvEncOpenEncodeSession()
 * function. The client must flush the encoder before freeing any resources. In order
 * to flush the encoder the client must pass a NULL encode picture packet and either
 * wait for the ::NvEncEncodePicture() function to return in synchronous mode or wait
 * for the flush event to be signaled by the encoder in asynchronous mode.
 * The client must free all the input and output resources created using the
 * NvEncodeAPI interface before destroying the encoder. If the client is operating
 * in asynchronous mode, it must also unregister the completion events previously
 * registered.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncDestroyEncoder(void* encoder);

// NvEncInvalidateRefFrames
/**
 * \brief Invalidate reference frames
 *
 * Invalidates reference frame based on the time stamp provided by the client.
 * The encoder marks any reference frames or any frames which have been reconstructed
 * using the corrupt frame as invalid for motion estimation and uses older reference
 * frames for motion estimation. The encoder forces the current frame to be encoded
 * as an intra frame if no reference frames are left after invalidation process.
 * This is useful for low latency application for error resiliency. The client
 * is recommended to set NV_ENC_CONFIG_H264::maxNumRefFrames to a large value so
 * that encoder can keep a backup of older reference frames in the DPB and can use them
 * for motion estimation when the newer reference frames have been invalidated.
 * This API can be called multiple times.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] invalidRefFrameTimeStamp
 *   Timestamp of the invalid reference frames which needs to be invalidated.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI NvEncInvalidateRefFrames(void* encoder, uint64_t invalidRefFrameTimeStamp);

// NvEncOpenEncodeSessionEx
/**
 * \brief Opens an encoding session.
 *
 * Opens an encoding session and returns a pointer to the encoder interface in
 * the \p **encoder parameter. The client should start encoding process by calling
 * this API first.
 * The client must pass a pointer to IDirect3DDevice9 device or CUDA context in the \p *device
 * parameter. For the OpenGL interface, \p device must be NULL. An OpenGL context must be current
 * when calling all NvEncodeAPI functions. If the creation of encoder session fails, the client must
 * call ::NvEncDestroyEncoder API before exiting.
 *
 * \param [in] openSessionExParams
 *    Pointer to a ::NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS structure.
 * \param [out] encoder
 *    Encode Session pointer to the NvEncodeAPI interface.
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_NO_ENCODE_DEVICE \n
 * ::NV_ENC_ERR_UNSUPPORTED_DEVICE \n
 * ::NV_ENC_ERR_INVALID_DEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncOpenEncodeSessionEx(NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS* openSessionExParams, void** encoder);

// NvEncRegisterResource
/**
 * \brief Registers a resource with the Nvidia Video Encoder Interface.
 *
 * Registers a resource with the Nvidia Video Encoder Interface for book keeping.
 * The client is expected to pass the registered resource handle as well, while calling
 * ::NvEncMapInputResource API.
 *
 * \param [in] encoder
 *   Pointer to the NVEncodeAPI interface.
 *
 * \param [in] registerResParams
 *   Pointer to a ::_NV_ENC_REGISTER_RESOURCE structure
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_RESOURCE_REGISTER_FAILED \n
 * ::NV_ENC_ERR_GENERIC \n
 * ::NV_ENC_ERR_UNIMPLEMENTED \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncRegisterResource(void* encoder, NV_ENC_REGISTER_RESOURCE* registerResParams);

// NvEncUnregisterResource
/**
 * \brief Unregisters a resource previously registered with the Nvidia Video Encoder Interface.
 *
 * Unregisters a resource previously registered with the Nvidia Video Encoder Interface.
 * The client is expected to unregister any resource that it has registered with the
 * Nvidia Video Encoder Interface before destroying the resource.
 *
 * \param [in] encoder
 *   Pointer to the NVEncodeAPI interface.
 *
 * \param [in] registeredResource
 *   The registered resource pointer that was returned in ::NvEncRegisterResource.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_RESOURCE_NOT_REGISTERED \n
 * ::NV_ENC_ERR_GENERIC \n
 * ::NV_ENC_ERR_UNIMPLEMENTED \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncUnregisterResource(void* encoder, NV_ENC_REGISTERED_PTR registeredResource);

// NvEncReconfigureEncoder
/**
 * \brief Reconfigure an existing encoding session.
 *
 * Reconfigure an existing encoding session.
 * The client should call this API to change/reconfigure the parameter passed during
 * NvEncInitializeEncoder API call.
 * Currently Reconfiguration of following are not supported.
 * Change in GOP structure.
 * Change in sync-Async mode.
 * Change in MaxWidth & MaxHeight.
 * Change in PTD mode.
 *
 * Resolution change is possible only if maxEncodeWidth & maxEncodeHeight of
 * NV_ENC_INITIALIZE_PARAMS is set while creating encoder session.
 *
 * \param [in] encoder
 *   Pointer to the NVEncodeAPI interface.
 *
 * \param [in] reInitEncodeParams
 *    Pointer to a ::NV_ENC_RECONFIGURE_PARAMS structure.
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_NO_ENCODE_DEVICE \n
 * ::NV_ENC_ERR_UNSUPPORTED_DEVICE \n
 * ::NV_ENC_ERR_INVALID_DEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_GENERIC \n
 *
 */
NVENCSTATUS NVENCAPI
NvEncReconfigureEncoder(void* encoder, NV_ENC_RECONFIGURE_PARAMS* reInitEncodeParams);

// NvEncCreateMVBuffer
/**
 * \brief Allocates output MV buffer for ME only mode.
 *
 * This function is used to allocate an output MV buffer. The size of the mvBuffer is
 * dependent on the frame height and width of the last ::NvEncCreateInputBuffer() call.
 * The NV_ENC_OUTPUT_PTR returned by the NvEncodeAPI interface in the
 * ::NV_ENC_CREATE_MV_BUFFER::mvBuffer field should be used in
 * ::NvEncRunMotionEstimationOnly() API.
 * Client must lock ::NV_ENC_CREATE_MV_BUFFER::mvBuffer using ::NvEncLockBitstream() API to get the
 * motion vector data.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in,out] createMVBufferParams
 *  Pointer to the ::NV_ENC_CREATE_MV_BUFFER structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_GENERIC \n
 */
NVENCSTATUS NVENCAPI
NvEncCreateMVBuffer(void* encoder, NV_ENC_CREATE_MV_BUFFER* createMVBufferParams);

// NvEncDestroyMVBuffer
/**
 * \brief Release an output MV buffer for ME only mode.
 *
 * This function is used to release the output MV buffer allocated using
 * the ::NvEncCreateMVBuffer() function. The client must release the output
 * mvBuffer using this function before destroying the encoder session.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] mvBuffer
 *   Pointer to the mvBuffer being released.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 */
NVENCSTATUS NVENCAPI NvEncDestroyMVBuffer(void* encoder, NV_ENC_OUTPUT_PTR mvBuffer);

// NvEncRunMotionEstimationOnly
/**
 * \brief Submit an input picture and reference frame for motion estimation in ME only mode.
 *
 * This function is used to submit the input frame and reference frame for motion
 * estimation. The ME parameters are passed using *meOnlyParams which is a pointer
 * to ::_NV_ENC_MEONLY_PARAMS structure.
 * Client must lock ::NV_ENC_CREATE_MV_BUFFER::mvBuffer using ::NvEncLockBitstream() API to get the
 * motion vector data. to get motion vector data.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 * \param [in] meOnlyParams
 *   Pointer to the ::_NV_ENC_MEONLY_PARAMS structure.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 * ::NV_ENC_ERR_INVALID_ENCODERDEVICE \n
 * ::NV_ENC_ERR_DEVICE_NOT_EXIST \n
 * ::NV_ENC_ERR_UNSUPPORTED_PARAM \n
 * ::NV_ENC_ERR_OUT_OF_MEMORY \n
 * ::NV_ENC_ERR_INVALID_PARAM \n
 * ::NV_ENC_ERR_INVALID_VERSION \n
 * ::NV_ENC_ERR_NEED_MORE_INPUT \n
 * ::NV_ENC_ERR_ENCODER_NOT_INITIALIZED \n
 * ::NV_ENC_ERR_GENERIC \n
 */
NVENCSTATUS NVENCAPI
NvEncRunMotionEstimationOnly(void* encoder, NV_ENC_MEONLY_PARAMS* meOnlyParams);

// NvEncodeAPIGetMaxSupportedVersion
/**
 * \brief Get the largest NvEncodeAPI version supported by the driver.
 *
 * This function can be used by clients to determine if the driver supports
 * the NvEncodeAPI header the application was compiled with.
 *
 * \param [out] version
 *   Pointer to the requested value. The 4 least significant bits in the returned
 *   indicate the minor version and the rest of the bits indicate the major
 *   version of the largest supported version.
 *
 * \return
 * ::NV_ENC_SUCCESS \n
 * ::NV_ENC_ERR_INVALID_PTR \n
 */
NVENCSTATUS NVENCAPI NvEncodeAPIGetMaxSupportedVersion(uint32_t* version);

// NvEncGetLastErrorString
/**
 * \brief Get the description of the last error reported by the API.
 *
 * This function returns a null-terminated string that can be used by clients to better understand
 * the reason for failure of a previous API call.
 *
 * \param [in] encoder
 *   Pointer to the NvEncodeAPI interface.
 *
 * \return
 *   Pointer to buffer containing the details of the last error encountered by the API.
 */
const char* NVENCAPI NvEncGetLastErrorString(void* encoder);

/// \cond API PFN
/*
 *  Defines API function pointers
 */
typedef NVENCSTATUS(NVENCAPI* PNVENCOPENENCODESESSION)(
    void* device, uint32_t deviceType, void** encoder
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETENCODEGUIDCOUNT)(void* encoder, uint32_t* encodeGUIDCount);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETENCODEGUIDS)(
    void* encoder, GUID* GUIDs, uint32_t guidArraySize, uint32_t* GUIDCount
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETENCODEPROFILEGUIDCOUNT)(
    void* encoder, GUID encodeGUID, uint32_t* encodeProfileGUIDCount
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETENCODEPROFILEGUIDS)(
    void* encoder, GUID encodeGUID, GUID* profileGUIDs, uint32_t guidArraySize, uint32_t* GUIDCount
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETINPUTFORMATCOUNT)(
    void* encoder, GUID encodeGUID, uint32_t* inputFmtCount
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETINPUTFORMATS)(
    void* encoder,
    GUID encodeGUID,
    NV_ENC_BUFFER_FORMAT* inputFmts,
    uint32_t inputFmtArraySize,
    uint32_t* inputFmtCount
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETENCODECAPS)(
    void* encoder, GUID encodeGUID, NV_ENC_CAPS_PARAM* capsParam, int* capsVal
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETENCODEPRESETCOUNT)(
    void* encoder, GUID encodeGUID, uint32_t* encodePresetGUIDCount
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETENCODEPRESETGUIDS)(
    void* encoder,
    GUID encodeGUID,
    GUID* presetGUIDs,
    uint32_t guidArraySize,
    uint32_t* encodePresetGUIDCount
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETENCODEPRESETCONFIG)(
    void* encoder, GUID encodeGUID, GUID presetGUID, NV_ENC_PRESET_CONFIG* presetConfig
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETENCODEPRESETCONFIGEX)(
    void* encoder,
    GUID encodeGUID,
    GUID presetGUID,
    NV_ENC_TUNING_INFO tuningInfo,
    NV_ENC_PRESET_CONFIG* presetConfig
);
typedef NVENCSTATUS(NVENCAPI* PNVENCINITIALIZEENCODER)(
    void* encoder, NV_ENC_INITIALIZE_PARAMS* createEncodeParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCCREATEINPUTBUFFER)(
    void* encoder, NV_ENC_CREATE_INPUT_BUFFER* createInputBufferParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCDESTROYINPUTBUFFER)(
    void* encoder, NV_ENC_INPUT_PTR inputBuffer
);
typedef NVENCSTATUS(NVENCAPI* PNVENCCREATEBITSTREAMBUFFER)(
    void* encoder, NV_ENC_CREATE_BITSTREAM_BUFFER* createBitstreamBufferParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCDESTROYBITSTREAMBUFFER)(
    void* encoder, NV_ENC_OUTPUT_PTR bitstreamBuffer
);
typedef NVENCSTATUS(NVENCAPI* PNVENCENCODEPICTURE)(
    void* encoder, NV_ENC_PIC_PARAMS* encodePicParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCLOCKBITSTREAM)(
    void* encoder, NV_ENC_LOCK_BITSTREAM* lockBitstreamBufferParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCUNLOCKBITSTREAM)(
    void* encoder, NV_ENC_OUTPUT_PTR bitstreamBuffer
);
typedef NVENCSTATUS(NVENCAPI* PNVENCLOCKINPUTBUFFER)(
    void* encoder, NV_ENC_LOCK_INPUT_BUFFER* lockInputBufferParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCUNLOCKINPUTBUFFER)(void* encoder, NV_ENC_INPUT_PTR inputBuffer);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETENCODESTATS)(void* encoder, NV_ENC_STAT* encodeStats);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETSEQUENCEPARAMS)(
    void* encoder, NV_ENC_SEQUENCE_PARAM_PAYLOAD* sequenceParamPayload
);
typedef NVENCSTATUS(NVENCAPI* PNVENCREGISTERASYNCEVENT)(
    void* encoder, NV_ENC_EVENT_PARAMS* eventParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCUNREGISTERASYNCEVENT)(
    void* encoder, NV_ENC_EVENT_PARAMS* eventParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCMAPINPUTRESOURCE)(
    void* encoder, NV_ENC_MAP_INPUT_RESOURCE* mapInputResParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCUNMAPINPUTRESOURCE)(
    void* encoder, NV_ENC_INPUT_PTR mappedInputBuffer
);
typedef NVENCSTATUS(NVENCAPI* PNVENCDESTROYENCODER)(void* encoder);
typedef NVENCSTATUS(NVENCAPI* PNVENCINVALIDATEREFFRAMES)(
    void* encoder, uint64_t invalidRefFrameTimeStamp
);
typedef NVENCSTATUS(NVENCAPI* PNVENCOPENENCODESESSIONEX)(
    NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS* openSessionExParams, void** encoder
);
typedef NVENCSTATUS(NVENCAPI* PNVENCREGISTERRESOURCE)(
    void* encoder, NV_ENC_REGISTER_RESOURCE* registerResParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCUNREGISTERRESOURCE)(
    void* encoder, NV_ENC_REGISTERED_PTR registeredRes
);
typedef NVENCSTATUS(NVENCAPI* PNVENCRECONFIGUREENCODER)(
    void* encoder, NV_ENC_RECONFIGURE_PARAMS* reInitEncodeParams
);

typedef NVENCSTATUS(NVENCAPI* PNVENCCREATEMVBUFFER)(
    void* encoder, NV_ENC_CREATE_MV_BUFFER* createMVBufferParams
);
typedef NVENCSTATUS(NVENCAPI* PNVENCDESTROYMVBUFFER)(void* encoder, NV_ENC_OUTPUT_PTR mvBuffer);
typedef NVENCSTATUS(NVENCAPI* PNVENCRUNMOTIONESTIMATIONONLY)(
    void* encoder, NV_ENC_MEONLY_PARAMS* meOnlyParams
);
typedef const char*(NVENCAPI* PNVENCGETLASTERROR)(void* encoder);
typedef NVENCSTATUS(NVENCAPI* PNVENCSETIOCUDASTREAMS)(
    void* encoder, NV_ENC_CUSTREAM_PTR inputStream, NV_ENC_CUSTREAM_PTR outputStream
);
typedef NVENCSTATUS(NVENCAPI* PNVENCGETSEQUENCEPARAMEX)(
    void* encoder,
    NV_ENC_INITIALIZE_PARAMS* encInitParams,
    NV_ENC_SEQUENCE_PARAM_PAYLOAD* sequenceParamPayload
);

/// \endcond

/** @} */ /* END ENCODE_FUNC */

/**
 * \ingroup ENCODER_STRUCTURE
 * NV_ENCODE_API_FUNCTION_LIST
 */
typedef struct _NV_ENCODE_API_FUNCTION_LIST {
    uint32_t version; /**< [in]: Client should pass NV_ENCODE_API_FUNCTION_LIST_VER. */
    uint32_t reserved; /**< [in]: Reserved and should be set to 0. */
    PNVENCOPENENCODESESSION
        nvEncOpenEncodeSession; /**< [out]: Client should access ::NvEncOpenEncodeSession() API
                                   through this pointer.        */
    PNVENCGETENCODEGUIDCOUNT
        nvEncGetEncodeGUIDCount; /**< [out]: Client should access ::NvEncGetEncodeGUIDCount() API
                                    through this pointer.       */
    PNVENCGETENCODEPRESETCOUNT nvEncGetEncodeProfileGUIDCount; /**< [out]: Client should access
                                                                  ::NvEncGetEncodeProfileGUIDCount()
                                                                  API through this pointer.*/
    PNVENCGETENCODEPRESETGUIDS
        nvEncGetEncodeProfileGUIDs; /**< [out]: Client should access ::NvEncGetEncodeProfileGUIDs()
                                       API through this pointer.    */
    PNVENCGETENCODEGUIDS
        nvEncGetEncodeGUIDs; /**< [out]: Client should access ::NvEncGetEncodeGUIDs() API through
                                this pointer.           */
    PNVENCGETINPUTFORMATCOUNT
        nvEncGetInputFormatCount; /**< [out]: Client should access ::NvEncGetInputFormatCount() API
                                     through this pointer.      */
    PNVENCGETINPUTFORMATS
        nvEncGetInputFormats; /**< [out]: Client should access ::NvEncGetInputFormats() API through
                                 this pointer.          */
    PNVENCGETENCODECAPS nvEncGetEncodeCaps; /**< [out]: Client should access ::NvEncGetEncodeCaps()
                                               API through this pointer.            */
    PNVENCGETENCODEPRESETCOUNT
        nvEncGetEncodePresetCount; /**< [out]: Client should access ::NvEncGetEncodePresetCount()
                                      API through this pointer.     */
    PNVENCGETENCODEPRESETGUIDS
        nvEncGetEncodePresetGUIDs; /**< [out]: Client should access ::NvEncGetEncodePresetGUIDs()
                                      API through this pointer.     */
    PNVENCGETENCODEPRESETCONFIG
        nvEncGetEncodePresetConfig; /**< [out]: Client should access ::NvEncGetEncodePresetConfig()
                                       API through this pointer.    */
    PNVENCINITIALIZEENCODER
        nvEncInitializeEncoder; /**< [out]: Client should access ::NvEncInitializeEncoder() API
                                   through this pointer.        */
    PNVENCCREATEINPUTBUFFER
        nvEncCreateInputBuffer; /**< [out]: Client should access ::NvEncCreateInputBuffer() API
                                   through this pointer.        */
    PNVENCDESTROYINPUTBUFFER
        nvEncDestroyInputBuffer; /**< [out]: Client should access ::NvEncDestroyInputBuffer() API
                                    through this pointer.       */
    PNVENCCREATEBITSTREAMBUFFER
        nvEncCreateBitstreamBuffer; /**< [out]: Client should access ::NvEncCreateBitstreamBuffer()
                                       API through this pointer.    */
    PNVENCDESTROYBITSTREAMBUFFER
        nvEncDestroyBitstreamBuffer; /**< [out]: Client should access
                                        ::NvEncDestroyBitstreamBuffer() API through this pointer. */
    PNVENCENCODEPICTURE nvEncEncodePicture; /**< [out]: Client should access ::NvEncEncodePicture()
                                               API through this pointer.            */
    PNVENCLOCKBITSTREAM nvEncLockBitstream; /**< [out]: Client should access ::NvEncLockBitstream()
                                               API through this pointer.            */
    PNVENCUNLOCKBITSTREAM
        nvEncUnlockBitstream; /**< [out]: Client should access ::NvEncUnlockBitstream() API through
                                 this pointer.          */
    PNVENCLOCKINPUTBUFFER
        nvEncLockInputBuffer; /**< [out]: Client should access ::NvEncLockInputBuffer() API through
                                 this pointer.          */
    PNVENCUNLOCKINPUTBUFFER
        nvEncUnlockInputBuffer; /**< [out]: Client should access ::NvEncUnlockInputBuffer() API
                                   through this pointer.        */
    PNVENCGETENCODESTATS
        nvEncGetEncodeStats; /**< [out]: Client should access ::NvEncGetEncodeStats() API through
                                this pointer.           */
    PNVENCGETSEQUENCEPARAMS
        nvEncGetSequenceParams; /**< [out]: Client should access ::NvEncGetSequenceParams() API
                                   through this pointer.        */
    PNVENCREGISTERASYNCEVENT
        nvEncRegisterAsyncEvent; /**< [out]: Client should access ::NvEncRegisterAsyncEvent() API
                                    through this pointer.       */
    PNVENCUNREGISTERASYNCEVENT
        nvEncUnregisterAsyncEvent; /**< [out]: Client should access ::NvEncUnregisterAsyncEvent()
                                      API through this pointer.     */
    PNVENCMAPINPUTRESOURCE
        nvEncMapInputResource; /**< [out]: Client should access ::NvEncMapInputResource() API
                                  through this pointer.         */
    PNVENCUNMAPINPUTRESOURCE
        nvEncUnmapInputResource; /**< [out]: Client should access ::NvEncUnmapInputResource() API
                                    through this pointer.       */
    PNVENCDESTROYENCODER
        nvEncDestroyEncoder; /**< [out]: Client should access ::NvEncDestroyEncoder() API through
                                this pointer.           */
    PNVENCINVALIDATEREFFRAMES
        nvEncInvalidateRefFrames; /**< [out]: Client should access ::NvEncInvalidateRefFrames() API
                                     through this pointer.      */
    PNVENCOPENENCODESESSIONEX
        nvEncOpenEncodeSessionEx; /**< [out]: Client should access ::NvEncOpenEncodeSession() API
                                     through this pointer.        */
    PNVENCREGISTERRESOURCE
        nvEncRegisterResource; /**< [out]: Client should access ::NvEncRegisterResource() API
                                  through this pointer.         */
    PNVENCUNREGISTERRESOURCE
        nvEncUnregisterResource; /**< [out]: Client should access ::NvEncUnregisterResource() API
                                    through this pointer.       */
    PNVENCRECONFIGUREENCODER
        nvEncReconfigureEncoder; /**< [out]: Client should access ::NvEncReconfigureEncoder() API
                                    through this pointer.       */
    void* reserved1;
    PNVENCCREATEMVBUFFER nvEncCreateMVBuffer; /**< [out]: Client should access ::NvEncCreateMVBuffer
                                                 API through this pointer.             */
    PNVENCDESTROYMVBUFFER
        nvEncDestroyMVBuffer; /**< [out]: Client should access ::NvEncDestroyMVBuffer API through
                                 this pointer.            */
    PNVENCRUNMOTIONESTIMATIONONLY
        nvEncRunMotionEstimationOnly; /**< [out]: Client should access
                                         ::NvEncRunMotionEstimationOnly API through this pointer. */
    PNVENCGETLASTERROR
        nvEncGetLastErrorString; /**< [out]: Client should access ::nvEncGetLastErrorString API
                                    through this pointer.         */
    PNVENCSETIOCUDASTREAMS
        nvEncSetIOCudaStreams; /**< [out]: Client should access ::nvEncSetIOCudaStreams API through
                                  this pointer.           */
    PNVENCGETENCODEPRESETCONFIGEX nvEncGetEncodePresetConfigEx; /**< [out]: Client should access
                                                                   ::NvEncGetEncodePresetConfigEx()
                                                                   API through this pointer.  */
    PNVENCGETSEQUENCEPARAMEX
        nvEncGetSequenceParamEx; /**< [out]: Client should access ::NvEncGetSequenceParamEx() API
                                    through this pointer.       */
    void* reserved2[277]; /**< [in]:  Reserved and must be set to NULL */
} NV_ENCODE_API_FUNCTION_LIST;

/** Macro for constructing the version field of ::_NV_ENCODEAPI_FUNCTION_LIST. */
#define NV_ENCODE_API_FUNCTION_LIST_VER NVENCAPI_STRUCT_VERSION(2)

// NvEncodeAPICreateInstance
/**
 * \ingroup ENCODE_FUNC
 * Entry Point to the NvEncodeAPI interface.
 *
 * Creates an instance of the NvEncodeAPI interface, and populates the
 * pFunctionList with function pointers to the API routines implemented by the
 * NvEncodeAPI interface.
 *
 * \param [out] functionList
 *
 * \return
 * ::NV_ENC_SUCCESS
 * ::NV_ENC_ERR_INVALID_PTR
 */
NVENCSTATUS NVENCAPI NvEncodeAPICreateInstance(NV_ENCODE_API_FUNCTION_LIST* functionList);

#ifdef __cplusplus
}
#endif

#endif
